原声例句
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It's a problem set where we've worked pretty hard to write some problems that we think will provide you with a good learning experience.
我们为了写出这个问题集,让大家好好学习下课没少侠功夫,你们应该通过材料来学习学习它。
应用推荐
$firstVoiceSent
- 来自原声例句