Echograph
n. 回声深度记录器
✅ 同义词
🗣️ 情景例句
So that's it.
原来是这件事。
Ill news comes space.
恶事传千里。
It was from the study of these that so much was learnt about the interior of the earth.
正是从这两种波的研究中，我们可以了解到地球内部的许多情况。