Etidronic acid
[化] 羥乙磷酸; 羥乙二磷酸
?? 詞語組成解析
??? 情景例句
They concluded that the goods were of good quality and proved no problem.
他們斷定貨物質地優良，并證明沒有任何問題。
It's nice meeting you.
很高興認識你。
The children were leaving school on Tuesday when they saw a truck.
星期二，孩子們正放學回家，這時，他們看見一輛卡車。