Tit for tat. 以牙还牙、针锋相对

　　John kicked me, so I gave him tit for tat.

　　What are you studying at Harvard?

　　Economics. That's what I'm here for.

　　Two and three is five.

　　Two plus three is five.

　　Two and three makes five.

　　Two and three equals five.

　　We're as different as night and day. 我们有天壤之别

　　We're completely different.

　　We have nothing in common.

　　Monkey see, monkey do.机械模仿,东施效颦

　　She just bought a new car just like yours.

　　Well, monkey see, monkey do.

　　First come, first served. *按顺序、先到先得

　　Do you take reservations?

　　No, first come, first served.

　　On a first-come, first-served basis.

　　Look at my camera.

　　But it's out of date already. 过时

　　It's old-fashioned.

　　It's outdated.

　　It's behind the times.

　　TV has its merits and demerits.

　　TV has its good and bad points.

　　There are good and bad points about TV.

　　I took advantage of his weakness. *利用…

　　The TV show was interesting.

　　Yeah, and I've learned something.长见识

　　I've learned something new.

　　Look at John's toy!

　　It's a fire hazard. 那会引起火灾呀!

　　It could catch on fire easily.

　　It could cause a fire.

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