Methylenediphosphonic acid(mdp)
[化] 亚甲基二膦酸
🗣️ 情景例句
He's stepped out of the office for a little while.
他离开办公室刚一会儿。
Life is a shuttle.
生活犹如梭子。
But a closer study of the evidence, supported by a deeper sense of the period,
但是，进一步仔细研究，对那个时代的深化了解，