講解：
free sb / sth / yourself (from sth)
解放；使擺脫
Three people were freed from the wreckage.
有三人被救出殘骸。

approve (of sb / sth)
贊成；同意:
I told my mother I wanted to leave school but she didn't approve.
我告訴母親我不想繼續(xù)上學(xué),但是母親不同意。

sth multiply
成倍增加；迅速增加:
Our problems have multiplied since last year.
自去年以來,我們的問題成倍增加。

open (to sb)
可得到；可使用:
What options are open to us?
我們有什么選擇？

wipe sb / sth out
徹底消滅；全部摧毀:
Whole villages were wiped out by the earthquake.
地震把整座整座的村莊夷為平地。

belong to sb
屬于某人；歸某人所有:
Who does this watch belong to?
這塊表是誰的？