ancient river course

• 古河道

ancient river course的用法和样例：

例句

1. The Qiantangjiang River crossing tunnel in Qingchun Road in Hangzhou was facing the serious problem which is caused by the confined water in the paleochannel of Qiantangjiang.
   杭州市庆春路钱塘江过江隧道工程中所遇到的钱塘江古河道承压水给基坑工程造成了很大的困难。