gain turn-down

例句：

1. 1. He gained a lot of knowledge from his study abroad experience.
   他通过留学获得了很多知识。
2. 2. The company has gained a reputation for excellence in the industry.
   该公司因在行业中的卓越表现而声名远扬。
3. 3. Gaining weight is not always easy, especially when you're trying to lose it.
   增重并不总是容易的，尤其是当你试图减重的时候。