Practical details of the commercial breeding of earthworms are outside the scope of this book . 商业饲养蚯蚓的细节非本书内容。
2.
We decided to rear traditional breeds because of their superior flavour and eating qualitiy over modern commercial breeds 我们之所以决定养殖传统品种，在于其非常好肉质超过现代商品猪。
