Paleochannel
古河道; 埋藏河道
??? 情景例句
Sure, anything you say.
當然，你說什么就是什么。
Don't mention it. I hope you can come again soon.
不用謝，希望你不久能再來。
New technology has also made its own contribution to noise.
新技術也為噪音作了它的貢獻。