名词
中文翻译：音调
同义词：
['pitch', 'tone', 'keynote']
例句：
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1. The singer's voice has a very pleasant tonal quality.
这位歌手的声音有一种非常悦耳的音调。
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2. Musicians need to be aware of their own tonal characteristics.
音乐家需要意识到自己的音调特点。
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3. The melody is in perfect harmony with the tonal balance of the instrument.
旋律与乐器的音调平衡完美协调。