Polyvinylene
聚乙烯撑, 聚次亚乙烯
🗣️ 情景例句
I was here too, but I didn't get to know you. I'm John.
我也出席了，但没有机会结识你。我叫约翰。
Silence is learnt by the may misfortunes of life.
沈默是通过生活中的许多不幸而学会的。
We aren't able to supply the third ad fifth items.
第三及第五项目，我们没有货供应。