这是我的下巴用英文怎么说

这是我的下巴的英语表达是 "This is my chin."

下巴的英语词源来自古英语 "cinn"或"gynn"，意思是面部的下部。

例句：

"She tilted her head back to expose her chin." (她抬起头来露出她的下巴)
"He shaved the hair off his chin." (他刮去了他下巴上的胡子)
"The model had a strong jawpne and a defined chin." (模特有着强烈的下颌线和明显的下巴)