Hydronal
海德郎那(一种氯醛和吡啶的聚合物)
🗣️ 情景例句
Help! Help! I can't swim!
救命！ 救命！ 我不会游泳
Deeds are fruits; words are but leaves.
行动是果实，言语只是树叶而已。
The wall behind looks a bit grey and dull. What can we do to make it look less ugly?
后面那堵墙看起来有点暗。我们能不能让它漂亮点？