Actinometry
n. 辐射测量学\\n[化] 曝光测定; 光能测定学; 光化线强度测定
🗣️ 情景例句
often took us somewhere in the city on the weekends.
经常在周末带我们去城市的一些地方。
There it is.
门在那儿。
'A fire extinguisher, my dear,' answered the Ambassador drily.
“灭火器弄的，亲爱的，”大使冷冷地回答，