Alcoxide
烃氧基金属
🗣️ 情景例句
You're a ... wonderful friend.
你是个……极好的朋友。
His friend was injured in an airplane crash.
他的朋友在飞机碰撞中受伤。
One man had a head wound and was in pain.
有一个人头部受了伤，非常痛苦。