no-no 禁忌，不能做的事情
1:Talking on the phone at the movie theatre is a big no-no.
在电影院讲电话是不可以的。
2: Chewing with your mouth open is a no-no.
张开嘴嚼东西是不行的。

win-win 双赢，互利
win-win situation 互利双赢的局面
1:The negotiation that the lawyer brokered was a win-win situation for everyone.
律师调解谈判对对双方都有好处。
2:Buying a used 2nd hand car can be a win-win situation… The buyer gets a good price, and the dealer sells a car.
买二手车是一件互利双赢的事情… 买家可以用优惠的价格买到一台车，卖家能够出掉自己闲置的车。

chop-chop 快点
Chop-chop, We're going to be late for our reservation.
快点，我们要赶不上预定的时间了。

hush-hush 低调点，保密
We should keep this business transaction hush-hush.
我们要低调点完成这笔交易。

fifty-fifty 平分账单
Let's call it even and split the profit 50-50. You take half and I take half.
我们平分赚来的钱吧。一人一半。