F number
焦距比数
🧩 词语组成解析
🗣️ 情景例句
but our schedules won't allow it.
但我们的工作时间表不允许这样。
I'll keep my eyes on.
我会留意的。
and that is one of the things the young are busily engaged in seeking.
这正是年轻人所热衷追求的。