Question

lookout of=look again吗？

Answer 1

lookout of 于look again 不是一个意思。
look again 是再看一下， 而lookout of是警戒的意思， 例如：
1）He denied that he'd failed to keep a proper lookout of things that night. 他否认那天晚上他未能小心警戒。
2）He kept a sharp lookout for any strangers. 他警惕地守望着，不放过任何一个陌生人。
3） If he wants to waste his money, that's his lookout. 他要乱花钱，那是他自己的事。

Answer 2

look out of 从…朝外看
lookout of 注意的，警戒的
look again 看一遍
所以不是一个意思