sonar ping

US

・

UK

A1 初級
n.名詞聲納信號
The sonar ping echoed through the water, revealing the submarine's location.
n.名詞聲納訊號偵測
We picked up a sonar ping, indicating a possible vessel nearby.
n.名詞主動聲納
The submarine emitted a sonar ping to map the ocean floor.

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