Radioindicator
[化] 放射性指示剂
🗣️ 情景例句
Oh! Good afternoon. Mr. Wilson, I'm sorry, but he's not in. He's gone out on business.
哦，您好！威尔逊先生。很抱歉，他不在家，他出差了。
Soon gotten, soon spent.
赚得快，花得快。
Same to you.
彼此彼此。