Selenitum
[医] 透明石膏, 玄精石
🗣️ 情景例句
78 percent of black high-school graduates are unemployed.
百分之四十八的黑人高中毕业生失业。
She failed to call the office to cancel her appointment.
她没能打电话给办公室取消她的约会。
Check the prices before you decide whether to buy one.
先把价格核对一下，再决定该不该买。