Sphincter
n. 括约肌\\n[医] 括约肌
📖 牛津释义
sphincter
n
(fml 文) ring of muscle that surrounds an opening in the body and can contract to close it 括约肌
the anal sphincter 肛门括约肌.
🗣️ 情景例句
Wow, your head's burning up!
哎呀，你的头真烫！
A man can not spin and reel at the same time.
一心不能二用。
And this is Luming.He is Chinese.
这位是鲁明。他是中国人。