鸟瞰 a bird's eye view 意思是俯视，是因为居高临下，一览无余，让你能俯视全景。

例句

From the aeroplane we got a bird's eye view of the spectacular snow capped mountains.

From the top floor of our hotel we had a bird's eye view of the city below.

请注意

短语as free as a bird 形容的是完全没有约束，无忧无虑的感觉，就像一只自由飞翔的小鸟。

Eg: I was as free as a bird when I finished my final school exam.

After quitting my job I felt as free as a bird as I could do exactly what I wanted.