自从美索不达米亚和埃及时代以来，玻璃就已经被制造出来了，它只不过是沙子、苏打灰和石灰的混合物。

Glass, which has been made since the time of the Mesopotamians and Egyptians, is little more than a mixture of sand, soda ash and lime.

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重要的是要了解和苏打石灰之间的硼硅酸盐玻璃的区别。

It is important to understand the difference between borosilicate and soda lime glass.

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多年以来，流传着这样的一种观点：加入苏打灰和除去石灰可以获得更容易加工的玻璃。

Over the years, the opinion has spread that adding soda ash and removing lime results in easier working glass.

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