Stercorite
磷钠铵石
🗣️ 情景例句
Please pass me a knife.
请把刀递给我。
For a few, scholarships were sources of support.
有少数人，奖学金是他们接受教育的学费来源。
Mr. Smith knew Jack didn't look at the others because he was nervous.
史密斯先生知道杰克不敢看别人是因为紧张。