of後面加什麼詞性

例句：

The book is the fruit of years of research.

這本書是多年研究的'成果。

Everybody is aware of the hazards of smoking.

大家都明白吸煙的危害。

Around 15% of our diet is composed of protein.

我們的飲食中大約有15%的蛋白質。

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。