含义不同、语境不同。look out of的意思是“向外看”；look out at的意思是“从…朝外看”。look out of多用于具体的某人；look out at多用于抽象事务。look out of还有回顾、展望的意思。
look out at的例句We look out at the beach.
我们朝沙滩看。
We love to sit on the floor and look out at the beach and the sea.
我们喜欢坐在大地板上，向外眺望海滩和大海。
From our windows we can look out at the sea and the mountains.
从我住的房子窗户望出去，能看到大海，还有群山。
look out of的例句As the train neared his hometown, the suspense became so great that he couldn’t bear to look out of his window.
火车里他的镇子越来越近了，他的内心十分焦虑，甚至都不敢朝车窗外面看上一眼。
Another food crisis does not look out of the question.
另一场粮食危机看来并非不可能。
SITTING on the john,he can look out of the window.
坐在马桶上，乔治望着窗外。
