He is good at reading and writing, but he wishes he knew how to understand and speak better.
他的阅读和写作是强项,但他希望知道怎样去理解和说得更好。
We continually wage war on them, for they contaminate our food, carry diseases, or devour our crops.
人类不断同昆虫斗争,因为昆虫弄脏我们的食物,传播疾病,吞噬庄稼。