Polygenesis
n. 多源发生说, 多细胞繁殖
🗣️ 情景例句
How did the test turn out?
考试结果怎样？
I'm done.
我不行了。
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。