Methylenediphosphonic acid(mdp)
[化] 亚甲基二膦酸
🗣️ 情景例句
Neither.
都不是。
Tomorrow is another day.
明天有明天的事。
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。