1. Water can be purified by boiling it for five minutes. 水沸腾五分钟便可得到净化。
2. In order to be purified, or combined into alloys, metals must be melted. 为了净化或合成合金,金属必须熔化。
3. Water ice could be melted and purified for drinking. 结冰的水可以融化后净化以供饮用。
4. The air tank contains high-pressure purified air and is exactly like the tank used by a SCUBA diver. 空气瓶内装有纯净高压空气,很像 SCUBA 潜水员用的气瓶。
5. From the Middle East the Chinese acquired a blue pigment—a purified form of cobalt oxide unobtainable at that time in China—that contained only a low level of manganese. 中国人从中东获得了一种蓝色颜料,这是一种当时在中国很难得到的纯净的氧化钴,这种颜料只含有少量的锰。