Beallon
比阿隆铜铍合金
🗣️ 情景例句
No sweat! I'd be happy to help.
没什么！很高兴我能帮上忙。
I know the boy whose father is a college president.
我知道那个男孩的父亲是大学校长。
He was sent to prison for failing to pay his debts and died in poverty in 1836.
他因无力还债而被捕入狱，最后于1836年在贫困中死去。