名词
中文翻译：Unknown
同义词：
['signature track', 'signature song']
例句：
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1. The composer's signature tune has become an anthem for the nation.
这位作曲家的签名曲已成为该国的国歌。
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2. The band's signature tune is a hit every time they perform.
乐队的签名曲每次演出都大受欢迎。
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3. The singer's signature tune has been featured in numerous TV commercials.
这位歌手的签名曲被多次用于电视广告中。