A large proportion of old people live alone.

一大部分老人都是独居。

Water covers a large proportion of the earth's surface.

水覆盖了地球表面的大部分。

A large proportion of the nation's households are hooked up to the Internet.

全国大部分家庭都接通了互联网。

Older people comprise a large proportion of those living in poverty.

在那些生活贫困的人中，老年人占有很大的比例。

A large proportion of the dolphins in that area will eventually die.

那个地区的很大一部分海豚最终都会死去。