Transportation problem
[计] 运输问题
🧩 词语组成解析
🗣️ 情景例句
You should perform what you promised to do.
你应该履行诺言。
Like father, like son.
有其父必有其子。
The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
城里甚至还敷设了排水系统，因为在狭窄的街道底下发现了许许多多陶土制作的排水管道。