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loudspeaker
英/lˈaʊdspiːkɐ/
美/ˈɫaʊdˌspikɝ/
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01n.
扩音器, 喇叭
electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
WORD BY WORD
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electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance