Builing dams and reservoirs along this river will take our great efforts.
沿这条河(或:江)修建水坝、水库,要花掉我们大把精力.
沿这河修建水坝水库会让我们下大力气.
Built,这里改为Building(动名词、或说现在分词形式),与dams and reservoirs搭配,构成动宾结构,做此句主语.
供参
Builing dams and reservoirs along this river will take our great efforts.
沿这条河(或:江)修建水坝、水库,要花掉我们大把精力.
沿这河修建水坝水库会让我们下大力气.
Built,这里改为Building(动名词、或说现在分词形式),与dams and reservoirs搭配,构成动宾结构,做此句主语.
供参