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
That's very nice of you, but I really can't.
你太客气了，可我真的非走不可。
Not all butter that the cow yields.
母牛所产的未必全是黄油。
There's nothing better for you than plenty of water and sleep.
你最好多喝水多休息。