hard lump

例句：

1. 1. The lumpon his forehead is a sign of stress.
   他额头上的肿块是压力的迹象。
2. 2. Thedoctor found a hard lump in her breast.
   医生在她的乳房里发现了一个硬块。
3. 3.He felt a hard lump in his stomachand decided to see a doctor.
   他感到胃里有一块硬东西，决定去看医生。