Phytoliths
(phytolith 的复数) n.[古生]植物化石,植物岩
🗣️ 情景例句
When is check-out time?
什么时候必须结帐和离开宾馆？
Sure. Just help yourself.
可以，自己拿吧。
The children were leaving school on Tuesday when they saw a truck.
星期二，孩子们正放学回家，这时，他们看见一辆卡车。