Ref.
abbr. 文件编号（尤用于商业文件分类）\\n
🗣️ 情景例句
Now Richard and I are having a baby,
现在 Richard和我有了孩子，
One thing, however, that we should not forget in doing business is to have a sense of appreciation.
可是有一件事我们做生意时不能忘，就是保持一份感恩的心情。
its movement would be recorded in ink upon its surface.
纸的表面就会用墨水记录下地板运动的情况。