“入门书”用英语怎么说？

总而言之，这是一本通俗而务实的物理入门书。On balance, the book is a friendly, down-to-earth introduction to physics.我从图书馆借了一本语音学入门书.I borrowed from the library a primer of phonetics.我从图书馆借了一本科学的入门书.I borrowed a primer of science from the lib...