Polymine
聚乙烯亚胺; 聚乙烯亚胺
🗣️ 情景例句
Is something still wrong, Robbie?
还有什么不对的地方吗， Robbie？
Better luck next time.
下次好运吧！
Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.
如果有相配的电压，可以煮少量水的便携式热水装置是有用的。