Age determination data indicate episodic crystallization of uranium minerals.年龄测定数据表明,铀矿物有着不同期的结晶.To make the fissile material, he needs to develop an ability to enrich uranium.为了得到分裂物质，他需要发展浓缩铀的能力。A graben creates a fav...
Food is made up of carbohydrates, proteins and fats.食物由碳水化合物、蛋白质和脂肪构成。Common salt is made up of 40% sodium and 60% chloride.食盐由40%的钠和60%的氯化物构成。The shoreline was made up of a jumble of huge boulders.海岸线上堆着一大堆杂乱的巨石。...