Radioindicator
[化] 放射性指示劑
??? 情景例句
Are you ready to go?
準備好動身嗎？
I'll see what I have. What do you need it for?
我來看看我有什么樣的零錢。你要干嘛？
Hello! Did you enjoy yourselves at the party ?
你好！你們在晚會上玩得愉快嗎？