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
We'll call on him in any case.
无论如何，我们都要去拜访他。
Wash your mouth out with soap!
嘴巴放干净一点！
I think he's Mr. Zhang.
我想他是张先生吧。