稀薄

例句：

1. 1.The soup is very thin and needs more seasoning.
   这汤很薄，需要更多的调味料。
2. 2.The dress is too thin for this weather.
   这件连衣裙太薄了，不适合这种天气。
3. 3.The air was so thin that we could barely see the stars.
   空气非常稀薄，我们几乎看不见星星。