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
Could you explain why you left?
你能解释一下你离开的原因吗？
We have opposite views on this.
我们在这上有相反的观点。
It's smaller than the blue one.
它比那件蓝色的还要小。