Stratas
(strata 的复数) pl. 层, 地层, 阶层\\n[医] 层
🗣️ 情景例句
I love doing it.
我爱这样做。
How long does it take?
火车要开多久？
Has it got anything to do with your present research?
报告跟你目前的研究有关吗？