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。

youdao

If you've ever watched a lifeguard approach a person who is drowning, you will see the lifeguard swim out to the person and then just tread water.

要是你以前看过救生员靠近溺水的人，你会看到救生员游到那个人身边，只是在踩水。

youdao

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。

youdao

Either way, many markets will tread water in the coming days, ahead of those key events.

FORBES: Gold Near Steady as Market Pauses; Fed, ECB Meetings Awaited

The result is a poisonous mix that means Zynga has to hemorrhage money just to tread water.

FORBES: Zynga Losing $150 On Every Customer, says Analyst

Even when not involved in play, as you can't touch the sides or floor of the pool and must tread water.

BBC: Last Updated: Friday October 28 2005 17:05 GMT