Dianthranide
[化] 联蒽; 联二蒽
🗣️ 情景例句
Thank you. I appreciate your help.
谢谢！很感谢你的帮助。
Through his experiences during those six years.
在这六年中。
And if, with the decay of vitality, weariness increases,
再者，随着精力的衰退，老年人的疲惫感会增长，