Parnanthracene
[化] 双蒽; 仲蒽; 聚二蒽
🗣️ 情景例句
the wedding will take place tomorrow.
婚礼只有明天举行了。
Every cloud has a silver lining.
山穷水尽疑无路，柳暗花明又一村。
It was spring,but the weather was awful.It rained all the time.
是春天，但天气太糟了。一直在下雨。