柯林斯詞典sounder /?sa?nd?/ 1. N an electromagnetic device formerly used in telegraphy to convert electric signals sent over wires into audible sounds (曾用在電信技術(shù)中的)音響器; 以轉(zhuǎn)化電信號(hào)竝把它送進(jìn)導(dǎo)線變爲(wèi)聽得見的聲音sounder /?sa?nd?/ N 1. N a person or device that measures the depth of water, etc 測(cè)量水深的人; 測(cè)量水深的儀器 返回 sounder