watch out小心，提防（不愉快的事情或陷入困境）；
look out（建筑物、窗户等）面向，朝向，对着；当心；小心
I should look out if I were you!
如果我是你，我会小心的。
I\'m just trying to look out for you
我只是想要为你着想。
You\'d better watch out, or you\'ll be getting done in.
你还是当心点好，不然你会上当受骗。
水利万物而不争,
而万物莫能与之争。
