This same lift force is generated while treading water.

当运动员进行踩水的时候也会有相同的上升力产生。

While treading water, one does not push down on the water.

当你做踩水动作时，你不会从水面之上向水下压水。

They may just look like they are treading water and looking up at the deck.

他们看起来可能就像是在踩水和看着甲板。

That means most Americans have been treading water for more than a generation.

这意味着大多数美国人已经有超过一代人的时间处于停滞不前的状态。

This may require doing some breaststroke, or treading water or floating for a little while.

这可能需要你游一会蛙泳, 或者踩水,或者漂浮一会.

A day without a shaming began to feel like a day picking fingernails and treading water.

哪天无人可辱，就觉得人生无望，惶惶不可终日了。

These days, the degree is so devalued that you are far better off going straight into the job market than spending three years treading water, running up big debts.

而现在，学位已经贬值，你还不如直接参加工作，而不是冒险浪费三年的时间，积累巨额债务。