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 know you're building a new factory,
我知道你在兴建一座新工厂，
He left his home to look for employment.
他离家去找工作。
Are there any houses in the picture?
画里面有房子吗？