单词	semicircular
释义	semicirclesemicircle /ˈsɛmiˌsɚkəl/ noun [countable] 1 math, geometry half a circle2a group arranged in a curved line, as if on the edge of half a circle:  A semicircle of chairs faced his desk.—semicircular /ˌsɛmiˈsɚkyəlɚ/ adjective
随便看	AC/DC ace acerbic acerbity acetaminophen acetate acetic acid acetone acetylcholine acetylene ache achievable achieve achievement achiever Achilles Achilles' heel Achilles tendon achoo achy acid acidic acidify acidity acidly

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