Emission velocity
[电] 发射速度
🧩 词语组成解析
🗣️ 情景例句
It's none of my business, but I think you ought to work harder.
这不关我的事，但我想你应该更加努力地工作。
There is no royal road to learning.
治学无坦途。
In the torchlight, he caught sight of a figure whom he immediately recognized as Bill Wilkins, our local grocer.
借着电筒光。他看见一个人，马上认出那是本地杂货店主经比尔。威尔金斯。