Polyacetaldehyde
聚乙醛
🗣️ 情景例句
I was wondering if you could help me. I'd like to know.
不知道你能否帮助我，我想知道。
When the fruit is scarcest, its taste is sweetest.
物以稀为贵。
what a lovely little girl she is!
她是一个多么可爱的小女孩耶！