knock/beat into a cocked hat

1. 击溃
   Black-and-white televisions are knocked into a cocked hat by the modern color ones.

   黑白电视机远远比不上现代化的彩色电视机。

pass/send the hat round

1. 募捐
   His friends passed the hat round and bought him a present.

   他的朋友们凑钱给他买了一件礼物。

take one's hat off to

1. 向某人（脱帽）致敬
   You have to take hat off to Uncle George, for he knows how to do business.

   你必须向乔治叔叔脱帽致敬，他懂得如何做生意。

   I take my hat off to him for the way he arranged the party.

   我对他这样安排宴会表示敬意。

2. 向某人表示赞赏（或钦佩）

talk through one's hat

1. 信口开河；胡说八道
   You're talking through your hat.

   你是在胡说八道。

under one's hat

1. 秘密的
   Keep it under your hat for the moment, won't you?

   暂时保密，好吗？

• hat in hand
  see cap in hand at cap.
• keep something under one's hat
  keep something a secret.
• pass the hat round (or N. Amer. pass the hat)
  collect contributions of money.
• pick something out of a hat
  select something at random.
• take one's hat off to
  state one's admiration for.
• talk through one's hat
  informal talk ignorantly.
• throw one's hat into the ring
  express willingness to take up a challenge.