Radioindicator
[化] 放射性指示剂
🗣️ 情景例句
Oh, really?
噢，真的？
The population of Africa is growing by leaps and bounds.
非洲的人口正在极其迅速地增长。
There is a fire burning in the fireplace, and the Christmas tree lights are shining brightly.
火在壁炉里熊熊燃烧，圣诞树的彩灯在交相交烁。