名词
中文翻译：管乐器的半径
同义词：
['radius of a tube', 'radius of apipe']
例句：
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1. The flute is the most popular instrument in theorchestra.
长笛是管弦乐队中最流行的乐器。
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2. The musician played the flutebeautifully.
那位音乐家演奏长笛时表现得非常美妙。
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3. The flute has a uniquesound that sets it apart from other instruments.
长笛有一种独特的声音，使它与其他乐器区别开来。