What moves him is the desire to unravel the mysteries of nature.推动他们的还是解开自然之迷的愿望.A young mother has flown to Iceland to unravel the mystery of her husband's disappearance...一位年轻的母亲飞抵冰岛，要揭开她丈夫失踪之谜。The stairway carpet...
The stairway carpet is so frayed it threatens to unravel.铺在楼梯上的地毯磨损得很厉害，都快散了。What moves him is the desire to unravel the mysteries of nature.推动他们的还是解开自然之迷的愿望.There is still a good deal to unravel.还有不少问题要澄清....
Air-entraining agent increases impermeability of hybrid fiber concrete.引气剂有助于提高混杂纤维混凝土的抗渗性。Even an air - entraining agent can be used because the minute pores are discontinuous.甚至可以使用加气剂,因为小的气孔是不连通的.Third, the option of ...