let on
phrasal verblet on (to somebody)
- (informal) to tell a secret
（对某人）说出秘密，泄密 - I'm getting married next week, but please don't let on to anyone.
我下周就要结婚了，但这事请对谁都不要说。 - let on (to somebody) that… She let on that she was leaving.
她透露说她要离开。
- I'm getting married next week, but please don't let on to anyone.