Queueing model
[计] 排队模型
🧩 词语组成解析
[计] 排队, 队列
🗣️ 情景例句
The trouble is
问题是
Affairs that are done by due degrees are soon ended.
事情要安步就班地做，就会很快地做完。
My parents were visiting relatives, and my grandparents had decided to spend the day at home.
我父母走亲戚去了，祖父母打算那天在家呆着。