单词 往上游走 例句 DEFINITIVE EXAMPLES 权威例句〔navigation〕Navigation becomes more difficult further upriver.越往上游走,航行就越困难。韦氏高阶〔up-river〕La Reole, up-river from St-Macaire.拉雷奥勒,从圣马凯尔往上游走柯林斯高阶 英语例句辞典收录了55...