Ffd
[医][=focal film distance]焦点胶片距离
🗣️ 情景例句
He's a pretty good bloke and he seems very friendly.
他是一个很不错的家伙，看起来也很友善。
Can I go now?
可以走了吗？
But that was not all.
它一再重复这些圆圈。