old hat
过时的
=old fashioned
That game is old hat man.
People now play Zombieland.
你那个游戏都老掉牙了
现在人们都玩僵尸园
keep it under one's hat
保守秘密
=keep a secret
I'm about to move to Canada.
But keep it under your hat for now.
我要移民加拿大了
但这事你先别跟任何人说
have one's hat off to someone
尊敬某人
=respect someone
My hat's off to your father.
What he has done is amazing.
很佩服你爸爸
他做的事情都很伟大
hang onto your hat
仔细听好了
=listen up
Hang onto your hat.
What I'm about to say is important.
仔细听着,我接下来要说重点了