The shallow sea bed yields up an abundance of food.浅海床提供了丰富的食物。With one exce-ption his novels are shallow and lifeless things.他的小说都是些肤浅沉闷的玩意儿，只有一本除外。Lowered sea levels exposed the shallow continental shelf beneath the Be...
Plans are being drawn up to build a hydroelectric station here.这里正筹划建设一座水力发电站.The soil washed from the hills is silting up the hydroelectric dams.从山上冲刷下来的泥土就要让水电大坝淤塞了。It is the power behind a 880 megawatt hydroelectric g...