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
Yes, I read you loud and clear.
嗯，我完全明白。
One must draw the line somewhere.
人之所为，总有限度。
The mother sat the child at a little table.
母亲安排孩子坐到小桌旁。