This paper is a useful addition to our knowledge of children's sleep patterns.
这篇文章帮助我们了解了儿童睡眠方面的知识。
You're bound to improve your English if you learn useful sentence patterns!
如果你学习实用的句型，你的英语肯定会进步的。
Sentence patterns are useful. You must learn to imitate them.
句型很有用。你们应该模仿套用。
This book is a magnificent and useful collection of World-style patterns.
这本书是一个宏伟的和有益的收集世界式的模式。
This book is a magnificent and useful collection of World-style patterns.
这本书是一个宏伟的和有益的收集世界式的模式。
应用推荐