他们将集中教授阅读、写作和算术基础知识。They will concentrate on teaching the basics of reading, writing and arithmetic.他用这个节目的录像带教授英语。He uses tapes of this program to teach English.这本书对于教授文学的老师来说帮助非常大。The book is an invaluable aid to teach...
Our bodies constantly metabolize the food we eat.我们吃的食物在体内不停分解产生代谢变化。Being herbivores, guinea pigs eat almost constantly, and metabolize food very quickly.作为食草动物, 猪猪几乎一直都在吃, 食物的新层代谢非常快.Insulin, synthesized in the islets ...