上游的城市将污水排放到河里。Cities upstream use the river to get rid of sewage.我们还推荐去杜罗河上游的短途自选一日游。We also recommend a full day optional excursion to the Upper Douro.冰把河道堵住了, 上游的水流不下来.The ice blocks up the river, making the upstream w...
He used to be one of the professors at the School of Education...他曾是教育学院的一名教授。I reflected on the relative importance of education in 50 countries.我思考了50个国家相对而言对教育的重视程度。Britain did not introduce compulsory primary educati...