酷兔词典首页
1. By keeping their pupils working unnecessarily long at some little part of the subject, they often weaken their interest in learning the language.
    让学生们在一些细小的方面花去过多的时间反复练习,这往往会减弱他们学习语言的兴趣。

2. You are being unnecessarily perverse.
    你无谓一意孤行.