proper tail

例句：

1. 1. The dog has a proper tail that is always neatly tied.
   这只狗有一根合适的尾巴，总是系得整整齐齐的。
2. 2. The suit fits properly, and the tail is just right for the occasion.
   这套衣服穿得合适，尾巴正好适合场合。
3. 3. The cat's tail is an important part of its personality; it should be kept in proportion with the rest of the body.
   猫的尾巴是它个性的一部分；它应该与身体其他部分保持适当的比例。