太河源出清泉.Rivers need a spring.河源区水土流失受自然因素和人类不合理开发利用因素联合控制,但后者的作用更为重要,而且导致了河源新的危害性更大的水土流失类型.Mechanism of soil erosion is put a bridle on spontaneous factor and action of humanity.你也可以去参观河源博物馆, 在那里你可以看到许多恐龙蛋化石.You can also ...
袋子平整折起后，底面与一侧交叠。When the bag is folded flat, the bag bottom overlaps one side of the bag.也可能是为了使油漆有个适宜底面.Alternatively it may be solely a method of forming a suitable background for painting.同高的平行六面体(的体积)之比等于其底面(积)之比.Par...
“ 不可折算的 ” 因素是一种不能数量化的因素.An " irreducible " element is one that can not be quantified.大银行同意按适当的折算率把小银行的贷款全买过来.The big banks agree to buy out the little banks at an appropriate discount.这种费用是根据收入高低滑动折算的(富人多付钱).Fees are cal...
They are listed on the closely guarded microfilm.它们列于一卷严格保管的缩微胶卷上.A device for reading materials in microform, such as microfilm and microfiche.显微阅读器用以阅读缩微成像, 如缩微胶卷和缩微平片上的材料的仪器.Tomorrow we'll look at microfilm recor...