Visible radiation
[电] 可见辐射
🧩 词语组成解析
🗣️ 情景例句
No, thank you. Please tell him to phone me when he comes back.
不了，谢谢。他回来时，请告诉他给我打个电话。
What time does the plane take off?
飞机何时起飞呢？
The comparable speed from the Moon is only 1.5 miles per second.
而从月球出发的相应速度只是每秒1。5英里。