Fathometer
n. 音响测深仪
🗣️ 情景例句
You have a good command of English.
你的英语水平很好。
Many people favor building more nuclear power plants.
许多人赞同修建更多的核电站。
He has been able to tell us more about active volcanoes than any man alive.
他能告诉我们的有关活火山的情况比任何在世的人都要多。