This book makes a significant contribution to dietetics.

　　此書對營養(yǎng)學(xué)有很大貢獻(xiàn)。

　　Suggest you buy this book dietetics teaching material, there is detailed introduction inside.

　　建議你買本書營養(yǎng)學(xué)教材，里面有具體的介紹。

　　He gave me a piece of advice on how to learn genetics.

　　他就如何學(xué)好遺傳學(xué)給我提出了一條建議。

　　The study of psychology has recently been widely cross-fertilized by new discoveries in genetics.

　　心理學(xué)研究最近從遺傳學(xué)的新發(fā)現(xiàn)中受益匪淺。

　　Smoking, rather than genetics, was the cause of his early demise.

　　導(dǎo)致他英年早逝的原因是吸煙而非遺傳。