北极冻原是指北极点周边的地区,是世界最高的地方.The arctic tundra is at the top of the world around the North Pole.冻原天鹅的北美洲亚种,以其柔和的鸣叫著名.North American subspecies of tundra swan having a soft whistling note.由永久冻土组成的北极冻原正在逐渐融化.Permafrost - the fr...
A new insulating laminate has just been designed by Attwater and Sons.一种新的绝缘层压材料刚由阿特沃特父子公司设计推出。Lamination: The process manufacturing a laminate using pressure and heat.层压: 用加压和加热制作积层板的生产工艺.Thick sections of the laminate ...
The builders have perched a light concrete dome on eight slender columns.建筑工人在8根细柱上架起轻巧的混凝土穹顶。Your decision must be translated into specific, concrete actions.你的决定必须转化为具体明确的行动。The hot liquid splashed down on the concrete...