Subphosphate
碱式磷酸盐
🗣️ 情景例句
Well, it's hard work.
嗯 这种工作很辛苦。
He has come to be recognized as an expert in the problem of overpopulation and food supply.
由于他的经验促使他终于成为了公认的人口过剩和食物供应问题的专家。
What did he do?
他是干什么的？