segment. please note: images depicting historical events may contain themes, or have descriptions, that do not reflect current understanding. they... - 不結實的 個影片檔及 b 捲影像03:32女人, 死亡
animation depicting the male reproductive system within the male body with skeletal system present. all elements of the animation have an x-ray style look to them. - 不結實的 個影片檔及 b 捲影像00:11陰莖
a pan form left to right of an x-ray view of the erection of the penis on a black background. - 不結實的 個影片檔及 b 捲影像00:10勃起, 陰莖, 醫學掃描
animation depicting a rotation of the male reproductive system. as the camera zooms and pans from left to right the penis becomes erect. - 不結實的 個影片檔及 b 捲影像00:30
animation of an erection. the male reproductive organs along with the kidneys and bladder are slowly rotated as the penis becomes erect. - 不結實的 個影片檔及 b 捲影像00:08
x-ray style animation of an erection. the male reproductive organs along with the kidneys, pelvis and lumbar vertebrae are slowly rotated as the penis becomes erect. - 不結實的 個影片檔及 b 捲影像00:08陰莖
animation depicting a 3d rotational view of the male reproductive system. as the organs revolve the penis becomes erect. - 不結實的 個影片檔及 b 捲影像00:13男性生殖器官
wild dog with a limp runs with other dog into sunset, kruger national park, south africa - 不結實的 個影片檔及 b 捲影像00:11
spheroid with organic properties rolling back and forth across barren paved landscape - loop - 不結實的 個影片檔及 b 捲影像00:35
layer of fluffy white cloud lying in valley between mountains snow and rocks in foreground two limp flags flying switzerland - 不結實的 個影片檔及 b 捲影像00:18
american newsreel report on a peaceful sit-in being held by a group of demonstrators who oppose the use of force who are removed into police vans... - 不結實的 個影片檔及 b 捲影像00:32
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:28
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:31
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:50
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:45
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:20
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:05
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:37
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:34
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:23
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:19
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:23
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:37
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:28
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:59
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:24
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:28
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:38
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:17
frontline worker on extremely long and arduous hours with extra over-time shifts working non-stop late because of the crisis to meet the worldwide pandemic battle to win it once and for all - 不結實的 個影片檔及 b 捲影像00:46
3d medical animation - transitional zone of lower esophagus sphincter and gastroesophageal - 不結實的 個影片檔及 b 捲影像00:14
sequence showing police arresting sit-in demonstrators outside the white house in washington d.c. who are protesting in sympathy with the selma... - 不結實的 個影片檔及 b 捲影像00:20
