dynamo hubs are available to fit most bikes but this one appears to be faulty - 單車氣泵 個影片檔及 b 捲影像00:15
dynamo hubs are available to fit most bikes but this one appears to be faulty - 單車氣泵 個影片檔及 b 捲影像00:14
dynamo hubs are available to fit most bikes but this one appears to be faulty - 單車氣泵 個影片檔及 b 捲影像00:17
asian cyclist pumping air to inflate the front wheel bicycle before cycling road trip during weekend. active healthy lifestyle cycling in the morning light. - 單車氣泵 個影片檔及 b 捲影像00:10踩單車
asian cyclist man using air pump pumping air into the wheels of his bike to check the readiness before cycling in the morning around the lake. - 單車氣泵 個影片檔及 b 捲影像00:21
asian cyclist man using air pump pumping air into the wheels of his bike to check the readiness before cycling in the morning around the lake. - 單車氣泵 個影片檔及 b 捲影像00:19
exercise and physical fitness - part 23 of 29. why exercise? this film explores some of the benefits - strength, endurance, flexibility, and spiritual awareness. an experiment measuring endurance reveals the physiological premises for exercise. by the end - 單車氣泵 個影片檔及 b 捲影像00:36
a monkey tale (bicycle safety) - part 11 of 15. this unusual film from new zealand contains amusing and effective illustrations of both the safe and the dangerous ways to ride a bicycle. the demonstrations are performed by a family of monkeys - 單車氣泵 個影片檔及 b 捲影像00:37猴子, 四K 解析度
boy repairing bike tire as others cycle by / boy goes into house to collect items / mother in kitchen gives boy lunch / boy rides away on his bike... - 單車氣泵 個影片檔及 b 捲影像01:09
/ children riding bicycles in the suburbs / boy repairs bike tire / teenage boys playing catch in the park. children play in the suburbs on january... - 單車氣泵 個影片檔及 b 捲影像00:24
mountain bike route friends repairing bicycles for a puncturing, inflating the wheel with the bowler hat, - 單車氣泵 個影片檔及 b 捲影像00:22
