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
May I take a picture of you and your little boy?
我可以替你和你的小男孩拍一张照吗？
He has a very bad stomachache from eating too much.
他因为吃得太多而导致胃痛。
I don't know his number. Did you write it down?
我不知道他的电话号码。你记下来了吗？