Euxanthone
[化] 优┷吨酮; 1,7-二羟(基)-9-氧杂蒽酮(请比较flavone黄酮)
🗣️ 情景例句
What are your hobbies?
你有那些爱好？
Why isn't this ticket any good here?
为什么这里不可以使用月票？
'I have just arrive in Scotland and I'm staying at a Youth Hostel.'
“我刚到苏格兰，我现住在一家青年招待所。”