- 所有的模型都有错，不过有些还是有用的。
All models are wrong, but some are useful.
- 这个词对我很有用。
The word is of great use to me.
- 这个网站很有用。
This website is very useful.
- 说英语很有用。
Speaking English is useful.
- 我会把所有有用的信息给你的。
I will provide you all the necessary information.
- 复制/粘贴是很有用的。
Copy-and-paste is very useful.
