污水中的营养物确实会加快港口的海藻生长。Sewage nutrients do increase algal growth in the harbour.上游的城市将污水排放到河里。Cities upstream use the river to get rid of sewage.黏稠的棕黑色污水在尸体周围流动着，非常恶心。The water moved darkly around the body, unpleasantly thi...
Ninety per cent of lone parent families are headed by mothers.90%的单亲家庭由母亲持家。a lone sailor crossing the Atlantic独自横渡大西洋的人A lone sea gull flew across the sky.一只孤独的海鸥在空中飞过....
这个基本概念在大多数水力学教科书中已有介绍.This basic concept is illustrated in most texts on hyd aulics.根据水力学原理设计的泵体,噪声最小.According to the design of water pump body mechanics the smallest noise.因而,本论文在河道汇流上采用水文学与水力学相结合的方法.Accordingly the co...