What does 改进 mean?
改进
improvement; to improve; to make better
Its characters
- 改 to change
- 进 to enter
In a sentence
我们还要改进工作方法。 We still need to improve our working methods.
蔡伦做的事情，是把造纸的方法改进了：用的东西更便宜，做出来的纸更好用，而且可以大量生产。
From 纸是蔡伦发明的吗？ · Who invented paper? Cai Lun and the older paper
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