科学快报-科学美国人Science Quickly, from SCIENTIFIC AMERICAN
Back then audio equipment wasn't so affordable and was quite sizable.
当时的音响设备不是那么实惠,而且相当大。
机智生活百科
Beats, an audio equipment producer based in the USA, uses a logo in which the letter B looks like headphones on a person's head.
Beats 是一家总部位于美国的音频设备生产商,在其商标中的字母 B 看起来就像戴一个人头上的耳机。
英语百科
Audio equipment
Audio equipment refers to devices that reproduce, record, or process sound. This includes microphones, radio receivers, AV receivers, CD players, tape recorders, amplifiers, mixing consoles, effects units, and loudspeakers.