P. d.
[医] 棱镜屈光度, 乳头直径, 瞳孔间距离
🗣️ 情景例句
It's called
它的题目是
You're not so great yourself.
你自己也没好到哪里去。
As it is only six feet across, it is barely noticeable.
仅6英尺宽，很难被发现。