例句：

　　Around 15% of our diet is composed of protein.

　　我們的飲食中大約有15%的蛋白質(zhì)。

　　One of the penalties of fame is loss of privacy.

　　成名的弊端之一是失掉了隱私。

　　Sunlight consists of different wavelengths of radiation.

　　陽光由波長不同的射線組成。