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
Blue is for boys, and pink is for girls.
蓝色是男孩子的 ，粉红色是女孩子的。
That fellow never pays his bills on time.
那个男人从没按时付过账。
supplying the rocket fuels for its ships,
作为航天飞船的燃料。