Spectroradiometry
[电] 分光辐射学
🗣️ 情景例句
That kind of thing.
等等。
I can't say for certain off-hand.
我还不能马上说定。
In return for this, the beggar stood on his head and sang songs.
作为回报，那乞丐头顶地倒立起来，嘴里还唱着歌。