Trias
n. 三叠纪
✅ 同义词
🗣️ 情景例句
Many hands make light work.
人多好办事。
Don't bother.
不用麻烦了。
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。