Bacillariophyta
硅藻门
🗣️ 情景例句
He is as poor as a church mouse.
他一贫如洗。
The phone seems to be out of order.
电话好像出故障了。
It is almost always due to some very special circumstances that traces of land animals survive,
几乎总是由于某些特殊的条件，陆地动物的遗体才被存下来，