Parnanthracene
[化] 双蒽; 仲蒽; 聚二蒽
🗣️ 情景例句
What's all the cheering about?
这么高兴是为什么？
Actually, my interest was directed more towards what particular markets you foresee for our product.
事实上，我关心的是贵公司对我们产品市场的考量。
Professor Karl von Frisch, an Austrian scientist, spent many years of his life researching the amazing ways honey bees communicate in their dark hives.
卡尔·冯·弗里施教授，一位澳大利亚科学家，一生中花了许多年的时间来研究蜜蜂在暗巢里互传信息的有趣方法。