Backward flow problem
[计] 逆向流问题
🧩 词语组成解析
flow
[fləu]
vi. 流;垂;流出;（谈话、文体等）流畅;
n. 流动;滔滔不绝;涨潮;连贯;
vt. 使泛滥;淹没;排出;
🗣️ 情景例句
What are you going to do?
你打算读什么？
If you would make an enemy,lend a man money and ask it of him again.
你若想与人结怨，只须先借钱给他，再向他催讨。
Good morning! What can I do for you?
早上好！我能为你做些什么？