改善 + Noun / 有 + 了 + 明显 + 改善
改善 (gǎishàn) is a verb meaning "to improve" or "to ameliorate." It describes making something better, typically a situation, condition, or relationship. It can also be used as a noun meaning "improvement." It is commonly used in formal and semi-formal contexts.
多运动可以改善睡眠质量。
Duō yùndòng kěyǐ gǎishàn shuìmián zhìliàng.
Exercising more can improve sleep quality.
政府采取了多项措施来改善交通状况。
Zhèngfǔ cǎiqǔ le duō xiàng cuòshī lái gǎishàn jiāotōng zhuàngkuàng.
The government has taken multiple measures to improve traffic conditions.
经过努力,他和同事的关系有了很大改善。
Jīngguò nǔlì, tā hé tóngshì de guānxì yǒu le hěn dà gǎishàn.
Through effort, his relationship with his colleagues has greatly improved.