例句與造句

1. German standard methods for the examination of water , waste water and sludge ; general measures of effects and substances group h , determination of the settleable matter by volume in water and waste water
   德國(guó)檢驗(yàn)水廢水和污泥的標(biāo)準(zhǔn)方法.第9部分:效果和物
2. It's difficult to find settleable matter in a sentence. 用settleable matter造句挺難的