Focal length
[计] 焦距\\n[化] 焦距
📖 牛津释义
focal length
(also focal distance), distance between the centre of a mirror or a lens and its focus 焦距.
🧩 词语组成解析
focal
['fəukəl]
adj. 焦点的，有焦点的;集中在点上的;病灶的，病灶性的;
🗣️ 情景例句
You first, Audrey.
你先来， Audrey。
With pleasure.
很荣幸。
That was a long time ago,wasn't it?
那是好久以前的事了。是吗？