bump

The doctor examined the hard bump on his forehead caused by the fall.

(Chinese) 医生检查了他因摔倒在前额留下的硬肿块。

I applied ice to the painful bump on my knee after the football match.

(Chinese) 足球比赛后，我在膝盖疼痛的肿胀处敷了冰块。

I often bump my head on the low ceiling when I go into the attic.

(Chinese) 我进阁楼时经常会碰到低矮的天花板。

The boat began to bump gently against the wooden pier as the waves rose.

(Chinese) 随着波浪升起，小船开始轻轻撞击木制码头。