Potamology
n. 河流学, 河川学
🗣️ 情景例句
I moonlight as a reporter.
我兼职当记者。
Sure. Just help yourself.
可以，自己拿吧。
The children are no longer young, and they know who Father Christmas really is.
孩子们不小了，他们知道真正的“圣诞老人”是谁。