名词
中文翻译：Unknown
同义词：
['echoed message', 'echoed signalling例句：1. The police department used a special device to echo the signal to the other side of the river.（警察局使用一种特殊设备来向河的另一边发出信号。）2. The echoed signal was so strong that it could be heard from a mile away.（回声信号如此强烈，以至于可以从一英里外听到。）3. The engineers were able to use the echoed signal to locate the fault in the transmission line.（工程师们能够利用回声信号定位传输线上的故障点。）']
例句：
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1. The police department used a special device to echo the signal to the other side of the river.
警察局使用一种特殊设备来向河的另一边发出信号。
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2. The echoed signal was so strong that it could be heard from a mile away.
回声信号如此强烈，以至于可以从一英里外听到。
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3. The engineers were able to use the echoed signal to locate the fault in the transmission line.
工程师们能够利用回声信号定位传输线上的故障点。