O.d.
abbr. oute rdiameter 外径
🗣️ 情景例句
It's your birthday.
今天是你的生日。
In elementary school,the child learns to read and write.
在小学，孩子学习读写。
One of the first things Annie did was to teach me how to play.
安妮首先要做的事情之一，就是教我如何耍。