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
I promise not to think about the city.
我保证不再去想城里的事。
In life, as in chess, forethought wins.
人生如下棋，多谋得胜利。
OK. I'm sure he would love to come.
好的。我相信他会来的。