Pioloform
聚乙烯醇缩醛
🗣️ 情景例句
It would be wonderful,
那倒是很美妙，
What's up?
最近有什么好事吗？
A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
敲打船体所发了的声音会从海底传回来，