Fluorexone
荧光素配位剂(由不纯品calcein制得的纯品)
🗣️ 情景例句
we are gathered here today
我们今天聚集在这，
All one's geese are swans.
自吹自擂。
Are you free later today, Mr. Green?
您今天晚些时候有空吗，格林先生？