瘪

例句：

1. 1.
   车辆
2. 2.
   声音
3. 3.
   心情、身体等
4. 1. The car was so full that it felt like it was sagging.
   这辆车太满了，感觉就像要塌陷一样。
5. 2. His voice was so low that he barely made a sound.
   他的声音太低了，几乎听不见。
6. 3. Her mood was down, and she felt very unwell.
   她的心情很低落，感觉身体很不舒服。