Optical speed
[计] 光速
🧩 词语组成解析
speed
[spid]
n. 速度;快速;昌盛;（汽车的）变速器，排挡;
vt.& vi. 急行，加速;
vi. 超速;加速;迅速前行;兴隆;
vt. 加快…的速度;使成功，使繁荣;
🗣️ 情景例句
Now, to check the list of things we need for the camping trip.
现在， 让我们检查一下露营旅行所需物品的清单吧。
A bird is known by its note,and a man by his talk.
鸟以声闻，人以言知。
They celebrated his birthday with a dance party.
也们举办舞会来祝贺他的生日。