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。
I am trying to keep down expenses.
我在努力控制支出。
We must try to keep down expenses this year.
我们要设法削减本年度的开支。
They tried to keep down expenses.
他们设法减少开支。
The company tries to keep down the cost.
这个公司试图控制成本。
They tried to keep down non-productive expenses.
他们设法缩减非生产性开支。
They are trying their best to keep down the noise of the heating system.
他们正尽力降低暖气系统的噪音。
They are trying their best to keep down the noise of the heating system.
他们正尽力降低暖气系统的噪音。
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