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
Not just to go around the neighborhood asking for furniture,
不仅在这社区募家具，
Gifts from enemies are dangerous.
敌人礼，藏危险。
It's a small world.
世界真小。