Epiphosphorite
肾磷铁钙石
🗣️ 情景例句
He's busy preparing for class.
他忙着准备功课。
What''s the fare to New York, Economy Class?
去纽约的经济舱机票多少钱？
Half a pound of coffee.A quarter of pound of tea.And a tin of tobacco.
半磅咖啡、1/4 磅茶叶和一听烟丝。