1、留神；当心；警惕；注意
例句: Look out!There's car coming.
当心!汽车来了。
2、朝外看；把头伸到窗外(看)
例句: He looked out of the window and saw it was raining.
他朝窗外看，发现下雨了。
3、找出；挑选出；搜寻
例句: He looked out some detective story books for his friend.
他为朋友挑选了几本侦探小说。
4.、(房间等)面向，面对度(常与 into， on， upon 等连用)：
例句: My window looks out into a street.
我的窗户面对着一条街。