Ref.
abbr. 文件编号（尤用于商业文件分类）\\n
🗣️ 情景例句
I'm always prepared to listen.
我总是准备听的。
Don't forget to phone to let us know you arrived safely.
不要忘记打电话，告诉我们你已经安全抵达。
Walking up and down the stairs would beat any exercise machine.
上下楼梯可比什么健身器都要好。