dean naujoks and evan quinter, staff members with potomac river keeper network, collect a sample of water from the potomac river to test for e.coli... - 大腸桿菌 個影片檔及 b 捲影像00:24
dean naujoks and evan quinter, staff members with potomac river keeper network, collect a sample of water from the potomac river to test for e.coli... - 大腸桿菌 個影片檔及 b 捲影像00:24
evan quinter, potomac river keeper network water quality & volunteer coordinator, prepares to collect a sample of water from the potomac river to... - 大腸桿菌 個影片檔及 b 捲影像00:14
evan quinter, potomac river keeper network water quality & volunteer coordinator, prepares to collect a sample of water from the potomac river to... - 大腸桿菌 個影片檔及 b 捲影像00:14
the common green bottle fly is a blowfly characterized by its striking metallic blue-green or golden coloration, marked with black. these blowflies... - 大腸桿菌 個影片檔及 b 捲影像00:20
the common green bottle fly is a blowfly characterized by its striking metallic blue-green or golden coloration, marked with black. these blowflies... - 大腸桿菌 個影片檔及 b 捲影像00:15
the common green bottle fly is a blowfly characterized by its striking metallic blue-green or golden coloration, marked with black. these blowflies... - 大腸桿菌 個影片檔及 b 捲影像00:20
the common green bottle fly is a blowfly characterized by its striking metallic blue-green or golden coloration, marked with black. these blowflies... - 大腸桿菌 個影片檔及 b 捲影像00:13
the common green bottle fly is a blowfly characterized by its striking metallic blue-green or golden coloration, marked with black. these blowflies... - 大腸桿菌 個影片檔及 b 捲影像00:20
close-up of smartphone surrounded by glowing blue bacteria on black background - 大腸桿菌 個影片檔及 b 捲影像00:14
close-up of smartphone surrounded by glowing blue bacteria on black background - 大腸桿菌 個影片檔及 b 捲影像00:30
close-up of smartphone surrounded by glowing blue bacteria on black background - 大腸桿菌 個影片檔及 b 捲影像00:30細菌, 手機
close-up of smartphone surrounded by glowing blue bacteria on black background - 大腸桿菌 個影片檔及 b 捲影像00:30
nicolas frochot , prefect of the paris department, speaks to the press and says "we have two bacteria, escherichia coli and enterococci. for some, we... - 大腸桿菌 個影片檔及 b 捲影像00:32
concern is growing in saint-quentin, northern france, after several children fell ill from e. coli infections - 大腸桿菌 個影片檔及 b 捲影像04:25
rowers warned of e coli in thames ahead of boat race; england: london: extjames doran interview sotluca ferraro interview sotvarious rowers in... - 大腸桿菌 個影片檔及 b 捲影像01:34
rowers warned of e coli in thames ahead of boat race; england: london: exterica popplewell interview sot - 大腸桿菌 個影片檔及 b 捲影像00:13
rowers warned of e coli in thames ahead of boat race; england: london: hammersmith:extrowing team along claire collins interview sotvarious rowers in... - 大腸桿菌 個影片檔及 b 捲影像00:23