Hexametapol
[化] 海姆帕; 六甲基磷(酸三酰胺)
🗣️ 情景例句
God helps those who help themselves.
天助自助者。
Can you do me a favour?
您能帮我个忙吗？
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。