When deposited , 70 - 80 % of the volume of muddy sediments may be water.泥质沉积物沉积后, 体积的70-80%是水.Loose sediments may be changed into solid sedimentary rocks.松散的沉积物可以变成坚硬的沉积岩.The sediments are detrital.沉积岩为碎屑质.Larix pollen ...
黑市上有大量武器出售。There is a plentiful supply of arms on the black market.实行定量配给的商品存在黑市交易。There's a black market in rationed goods.他是黑市拳王。He's the king of unlicensed boxing....
他的目光在两个女孩身上打转。His eyes swivelled from one girl to the other.他声音颤抖，泪水在眼眶里打转。His voice trembled, on the verge of tears.独木舟遇上急流后直打转。The canoe found the current and swung around....