[Derek] NIST has been making these standard reference materials for over a century.

- [Derek] NIST 制作这些标准参考材料已有一个多世纪了。

NIST is preparing to launch its first living standard reference material next year.

NIST 正准备于明年推出其第一份生活标准参考材料。

Thus to enhance the sense of happiness is not equal to improving one's material living standards.

因此，幸福感的提升并不等于物质生活水平的提高。

It is also highly practical as it can be plugged in as a standard material model without any crazy modifications to the simulation program.

它还可以直接作为标准的材料模型来使用，不用对程序做太大的改动，这非常的好用。

[Derek] Identifying dangerous contaminants is a big part of what these standard reference materials are for, which is why they have several types of lead paint or water from a glacier in Greenland.

- [Derek] 识别危险污染物是这些标准参考材料的一个重要部分，这就是为什么他们有几种类型的含铅油漆或来自格陵兰冰川的水。