After several rounds, if there was SARS-CoV-2 RNA in the original sample, you'll have amplified DNA from that sample that can be detected.

在数个循环之后，如果鼻咽拭子中存在SARS-CoV-2的病毒RNA，检测人员将会从样本中成功扩增得到DNA。

Whether this means that the original samples were tainted in some way or that the levels of chemicals vary from sample to sample isn't clear.

这是否意味著原始样本受到某种污染或者化学物质的含量因样本而异，原因并不明确。

At the time, Tim was sampling a lot of Wes Montgomery, which is where the original sample from " Thong Song" came from.

当时，Tim 正在对 Wes Montgomery 进行大量采样，这就是“Thong Song”的原始样本的来源。

And they saw that the minerals in the pigment crystallized—changes they'd also seen in the original sample—which would make the paint more resistant to breaking down.

他们看到颜料中的矿物质结晶——他们在原始样品中也看到了这种变化——这将使油漆更不易分解。