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1·Keep down! You mustn't let anyone see you.

蹲下！一定不要让人看见你。《牛津词典》

2·The company wants to keep down labour costs.

公司想保持低劳动成本。《牛津词典》

3·Despite the need for more people in the market, most companies want to keep down labour costs.

尽管市场上需要更多的人手，大部分公司还是希望保持较低的劳动力成本。

4·Packs of ice were put on my forehead to keep down the fever.

几包冰袋放在我的额头上以退烧。

5·They tried to keep down expenses.

他们设法减少开支。

6·If the enemy opened fire, keep down.

如果敌人开火，就卧倒。

7·Great trees keep down the little ones.

大鱼吃小鱼，小鱼吃虾米。

8·The company wants to keep down labor costs.

公司不想提高劳动成本。

9·We must try to keep down expenses this year.

我们要设法削减本年度的开支。

10·We must keep down the number of useless mouths.

我们必须减少吃闲饭的人。