Polyacetaldehyde
聚乙醛
🗣️ 情景例句
I knew it! I knew it!
我就知道是这样 ，我就知道是这样！
Have you thought about staying home?
是否考虑在家呆着？
The box is heavy. Can you carry it?
这个箱子很重，你能搬动吗？