| 单词 | sphincter |
| 释义 | sphincter sphincter /ˈsfɪŋk.tər/ aep /-tɚ/ noun [C] SPECIALIZED ► F0 a muscle that surrounds an opening in the body and can tighten to close it: » the anal sphincter» a sphincter muscleThesaurus+: ↑Substances and structures in the body |
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