Polyindene
[化] 聚茚
🗣️ 情景例句
Our products are of good quality and at a reasonable wholesale price.
我们的产品质量好，而且批发价很合理。
We can't make a decision without thinking it over.
我们不能不考虑，就作决定。
For a beginner, you're pretty good.
做为一个初学者，你已经做得很好了。