subwoofer

英 [ˈsʌbwuːfə(r)]

美 [ˈsʌbwʊfər]

n.  (扩音器的)低音炮，低音音箱

复数：subwoofers　

COCA.30435

牛津词典

noun

• （扩音器的）低音炮，低音音箱
  a part of a loudspeaker that produces very low sounds

英英释义

noun

• a loudspeaker that is designed to reproduce very low bass frequencies