它们一定是由稀有材料制成的。
好，下个问题：牛奶可以制成奶酪，有的人喜欢羊奶做的奶酪。
Milk can be made into cheese. Some people like cheese made with milk from a sheep.
用防水布制成的巨型枕头能够当成床来使用。
Giant pillow made from waterproof fabric cab be used as a bed.
几乎任何一种植物的叶子都可以制成茶。
工厂的废品可以制成筑路的材料。
Waste products from factory can be made into roadbuilding material.
从这些珠子制成的珠宝，然后发送到美国出售。
Jewelry made from those beads was then sent to the United States to be sold.
认为低品位硅藻土和珍珠岩经过适当加工是可以制成合格助滤剂的；
It is possible that the filter-aids could be made from low grade diatomite and perlite;
酒可以用大米、番薯、小麦、葡萄制成。
好，下个问题：牛奶可以制成奶酪，有的人喜欢羊奶做的奶酪。
OK, another question. Milk can be made into cheese. Some people like cheese made with milk from a sheep.
可以用各种材料制成，包括钢、玻璃、塑料或透明材质。
It can be made from various materials like steel, glass, plastic or transparent materials.
可以用各种材料制成，包括钢、玻璃、塑料或透明材质。
It can be made from various materials like steel, glass, plastic or transparent materials.
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