1.gain the upper hand over 占上风,战胜
We've been doing everything we can for your father, but I'm afraid the cancer is gaining the upper hand.
我们已经为你父亲做了所有能做的事,但恐怕还是没能战胜癌症
。2.prosecute for 以……起诉
In extreme cases, insurance companies can prosecute for fraud.
在极个别情况下,保险公司会起诉骗保行为
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