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'd like to propose a toast.
我想来祝酒。
Aren't you dressed too formally?
你穿的不是太正式化了吗？
Oh dear! What shall I do?
哎呀！我怎么办呢？