Dianthracene
双蒽
🗣️ 情景例句
How have you been?
你近来怎么样？
I wonder why they're angry.
伙计，他们为什么生气？
l am vacuuming the floor now and have several shirts to iron.
我正在用真空吸尘器清理地板，还有好几件衬衫要熨。