A large proportion of old people live alone.

一大部分老人都是独居。

《牛津词典》

Since such a large proportion of their fat stores is exhausted despite feeding, mother seals clearly cannot support all of lactation using only energy stored before giving birth.

由于如此大比例的脂肪储备在喂养过程中会消耗殆尽，海豹母亲显然不能仅靠生育前储存的能量来维持整个哺乳过程。

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

水覆盖了地球表面的大部分。

《牛津词典》

Mexicans comprise a large proportion of the more than 12 million illegal immigrants in the United States.

VOA: standard.2009.04.12

This is even more true if a large proportion of those taxpayers are high-skilled college graduates.

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This is important because a large proportion of American firms are incorporated in Delaware.

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Interestingly Keas and Zynga have similar demographics, with a large proportion of 40-something-year-old women.

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