渔民依靠声呐来定位鱼群。

Fishermen rely on sonar to locate schools of fish.

科学家使用声呐来绘制海底地图。

Scientists use sonar to map the ocean floor.

潜艇配备了先进的声呐系统。

The subs are equipped with advanced sonar systems.

潜艇使用声呐来探测水下物体。

The submarine uses sonar to detect underwater objects.

潜水艇配备了先进的声呐技术。

The submarine is equipped with advanced sonar technology.