Polycoumarone
[化] 聚香豆酮; 聚氧杂茚
🗣️ 情景例句
Please sit down.
请坐下。
The building of the new road has been held up by bad weather.
这条新马路的修筑因天气恶劣而受阻。
Well, that pair looks nice. How much do they cost?
嗯，那双看来不错。多少钱？