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
How about a cup of coffee, Son?
来杯咖啡怎么样， 孩子？
In college I majored in physics, What was you major?
大学时我主修物理，你主修什么呢？
Yes. B-double O-K, book.
好的。B-双写O-K，book（书）。