take something with a grain of salt
US /teɪk ˈsʌmθɪŋ wɪð ə ɡreɪn əv sɔlt/
UK /teɪk ˈsʌmθɪŋ wɪð ə ɡreɪn əv sɔlt/
1.
对...持保留态度, 半信半疑
to not completely believe something that you are told because you think it is unlikely to be true
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You should take everything he says with a grain of salt; he tends to exaggerate.
你应该对他说的一切持保留态度；他喜欢夸大其词。
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I'd take that rumor with a grain of salt; it sounds too good to be true.
我对那个谣言持保留态度；听起来好得不像真的。