break into a laugh

哄笑起来。

good for a laugh

好笑的事(物)。

have the last laugh on

形势逆转而胜过(某人)。

have (get) the laugh of sb

反讥(某人)。

raise a laugh

引人发笑；逗人笑。

Laugh and grow fat.

【谚】心宽体胖。

laugh at

(a)因(故事有趣，听笑话等而)发笑。(b)嘲笑；轻视。(c)不理；漠视。

laugh away

(a)一笑置之。(b)以笑打发。

laugh down

以笑中止(沉默)。

laugh in (sb's) face

当面嘲笑；公然蔑视(某人)。

laugh in (up) one's sleeve

窃笑。

laugh like a drain

【口】开怀大笑。

laugh off

一笑置之；不予重视。

laugh on the wrong (other) side of one's face (mouth)

转喜为忧；由笑脸变为哭脸。

laugh one's head off

呵呵大笑。

laugh out

捧腹大笑。

laugh (sb; an opinion) out of court

(对人,意见等)不当一回事；付之一笑。

laugh over

笑着讨论；边回想边笑。

laugh to scorn

【古】嘲笑；愚弄。

He who laughs last, laughs longest.

【谚】勿高兴得太早；勿过早得意(= He laughs best who laughs last)。