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
Everything will be just fine.
一切都会安好的。
He who can suppress a moment's anger may prevent a day of sorrow.
能忍一时气，可免一日优。
How do you do?
你们好！