hangnail

例句：

1. 1.She had a hangnail on her toe that wouldn't heal.
   她的脚趾上有一个小指甲，一直不好。
2. 2. He cut his finger and it turned into a big hangnail.
   他切了手指，结果变成了一个大指甲。
3. 3. The doctor told him he needed to keep the hangnail clean and dry.
   医生告诉他需要保持小指甲干净和干燥。