be on the tip of your tongue
US /bi ɑn ðə tɪp əv jʊər tʌŋ/
UK /bi ɑn ðə tɪp əv jʊər tʌŋ/
1.
就在嘴边, 差点想起来
almost able to remember something, but not quite
:
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Her name is on the tip of my tongue, but I just can't recall it.
她的名字就在我嘴边，但我就是想不起来。
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I know that actor's name, it's on the tip of my tongue!
我知道那个演员的名字，就在我嘴边！