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
Don't thank me.
别谢我。
Don't you agree?
你不同意吗？
He is a smart boy.
他是个小机灵鬼。