Occasionally, I tread water for three days in a row.
我的工作效率很高。有时,我可以连续三天踩水。
If you can't get back to the beach, tread water and wave for a lifeguard's help.
假如你无法游回岸边,可踩水并向救生员挥手求救。
Get in the water and swim (or tread water) for 2-3 minutes to get your body warmed up.
下到水里游泳或踩水2至3分钟来唤醒你的身体。
应用推荐