All talk and no trousers
Prone to empty boasts
只说不做，光说不练
- He says he's going to complain to the manager, but he's all talk and no trousers.
他说他要向经理鸣不平，但我认为他不过是说说而已。
Excused boots
Allowed to avoid mandatory tasks
免去应尽义务
- Susan was excused boots for the party cleanup because she has an exam tomorrow.
苏珊已被免去清理派对残局，因为她明天要参加考试。
Feather in one’s cap
An achievement for which one is recognized
可引以为豪的成就
- It's a real feather in our cap to be playing in the state championship.
能够参加州锦标赛是真正让我们引以为豪的事。
First in, best dressed
The first people to do something will have an advantage
先到先得，近水楼台先得月
- Come on, the first hundred customers today get a free gift! First in, best dressed!
快点，今天的第一批百名顾客可以获得免费礼物！先到先得！
Keep it under your hat
Don’t tell anyone; don’t reveal this secret
保密，保守秘密
- Look, if I tell you something, will you promise to keep it under your hat?
喂，如果我告诉你一件事，你能答应保守秘密吗？
Knock someone’s socks off
Amaze someone
令人惊奇；令人刮目相看（如果某物“打落你的袿子”，表示你发现它令人极端兴奋或极好）
- I'm going to take you to a restaurant that'll knock your socks off.
我准备带你到一家餐厅去，你会大吃一惊的。
Old hat
Old-fashioned, predictable
过时的；老式的；不新奇的
- He may be old hat among the trendy younger generation, but his shows draw more viewers than any other comedian.
在这帮新潮的年轻一代中，他可能有些老土，不过他的表演比其他喜剧演员更吸引观众。
Quake in one’s boots
To be very frightened
害怕得发抖，不寒而栗
- The very thought of a hurricane blowing in makes me quake in my boots.
一想到飓风可能随时来袭我就不寒而栗。
Throw down the gauntlet
To issue a challenge
发出挑战
- A price war looks likely now that a leading supermarket has thrown down the gauntlet to its competitors.
一场价格战似乎一触即发，因为一个龙头超级市场已经向对手们发出了挑战。
