Dichloromethylene diphosphonate(cl-2mdp)
[化] 二氯亚甲基二膦酸
🗣️ 情景例句
When the bough breaks,
树枝若折断
He that knows nothing, doubts nothing.
无知就无疑。
What time will the next train leave?
下一班火车什么时候开？