The man had the effrontery to be sarcastic.

那个男人有冷嘲热讽的放肆劲。

《柯林斯英汉双解大词典》

'There's no need to be sarcastic,' she said.

“不必挖苦人嘛。”她说。

《牛津词典》

Don't fidget, be sarcastic or self-deprecating.

不要坐立不安，语气嘲讽或自嘲。

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It can have a very sarcastic undertone which could be good, depending on what you need to express.

它可以表达一种带着挖苦意味的好意，这取决于你表达的需要。

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because that sarcastic undertone may or may not be present depending on how it's used.

因为话中是否有挖苦的意思，还得看这句型是如何使用的。

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They are right to be sarcastic, since the IRS is almost sure to go after it.

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Or, to be a little more sarcastic about it, which is easier?

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They said the video was taken from Tracy's belongings, along with another short video that shows a group of young people talking, in what appears to be a joking, sarcastic manner, about being paid many millions of dollars to participate in anti-government demonstrations.

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