improve

1. V-T/V-I If something improves or if you improve it, it gets better. 改进

Within a month, both the texture and condition of your hair should improve. 不出一个月，你头发的质地和状况应该都会改善。

2. V-T/V-I If a skill you have improves or you improve a skill, you get better at it. 提高

Their French has improved enormously. 他们的法语水平提高了很多。

3. V-I If you improve after an illness or an injury, your health gets better or you get stronger. 康复

He had improved so much the doctor had cut his dosage. 他康复了很多，医生减少了他的用药量。

4. V-I If you improve on a previous achievement of your own or of someone else, you achieve a better standard or result. 提高

We need to improve on our performance against Nabisco. 我们需根据纳贝斯克公司标准来提高我们的业绩。