reef

The doctor noticed a reef patch on the patient's arm and recommended a cream.

医生注意到病人胳膊上有一块结痂的皮肤，建议涂药膏。

用法提示：形容词 reef 在名词 patch 前作定语，表示“结痂的”。

After weeks at sea, the sailor's hands were reef and cracked from the salt wind.

在海上待了几周后，水手的双手因海风盐渍而结痂开裂。

用法提示：形容词 reef 作表语，与系动词 were 搭配，描述手部结痂的状态。

The rash on his back was reef, but the one on his leg was even reefer.

他背上的皮疹结了痂，但腿上的皮疹结痂更严重。

用法提示：形容词 reef 作表语，并用比较级 reefer 表示“结痂更严重的”。