Bismuthia
[医] 铋线
🗣️ 情景例句
A real dilemma.
一个大伤脑筋的事。
I've realized that we should stop the pollution.
我明白必须阻止公害的原因了。
Are you free later today, Mr. Green?
您今天晚些时候有空吗，格林先生？