Focal-length
[医]局部长度，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
How many people live in Turkey?
有多少人在土耳其生活？
The path of duty is the path of safety.
尽职的路是安全的路。
Good idea! That is much better than watching a bad TV programme!
好主意！这比看破电视节目要好多了。