[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。

[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。