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
He made up his mind to give up smoking.
他下决心戒烟。
That cat judged the distance before he leapt across the ditch.
猫在越过沟渠以前便判断好其距离了。
OK.
好吧！