take the edge off....減弱

Aspirin will usually take the edge off the pain.
阿司匹林通常可以減輕疼痛。
I need a sandwich to take the edge off my appetite.
我需要一個三明治以解腹中饑。

A:How can I help you today?
我今天能幫你點什么？
B:I am in a lot of pain from my knee surgery last week and I need some stronger medicine.
我上周做完膝部手術后，膝蓋就一直疼，我需要一些更強效的藥。
A:The painkillers I prescribed for you are not working?
我給你開的止疼藥不管用嗎？
B:They only take the edge off for an hour or two.After that,the pain returns.
止疼藥只能維持一到兩個小時。過后，又開始痛了。
A:Well,right now you are taking a very mild painkiller.If it's not helping,I can give you something else.
好吧，現在你服用的是一種非常溫和的止疼藥。如果不起作用，我再給你開一些別的藥。
B:How about morphine?
嗎啡怎么樣？
A:We only prescribe morphine in extreme cases.There is another good medicine I will prescribe for you.
我們只有在極其特殊的情況下才會開嗎啡。我會給你開另一種有效的藥。
B:Oh,I didn't know that.I'll try whatever you recommend.
哦，我不懂這些。你說什么，我都會試試。