Radioindicator
[化] 放射性指示剂
🗣️ 情景例句
Thanks for inviting me to the dinner. I'm looking forward to it.
谢谢你邀请我一起吃晚饭，约会日期早些到就好了。
As the touchstone tries gold,so gold tries man.
试金之石可试金，正如黄金能试人。
No doubt about it.
毫无疑问。