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
I've never been to the aquarium
我从来没有去过水族馆
The television set is out of order.
这电视机出毛病了。
What are you doing? he asked.
“你在做什么？”他问道。