She explains how the test works.

她解释了这一测试的原理。

The test works by looking for changes in the genetic code of cancers.

该检测通过寻找癌症遗传密码的变化来达到目的。

To understand how genetic ancestry tests work, let's start with the DNA itself.

为了理解遗传血统测试是如何工作的，让我们从 DNA 本身开始了解。

But what can inkblots really tell us, and how does this test work?

但是墨迹图究竟能告诉我们什么呢？它又是如何起作用的呢？

Antibody tests work really well when we can't find a pathogen another way.

当我们无法通过其他方式找到病原体时，抗体测试非常有效。

Scientists hypothesized that the test worked because pregnant women's urine contains more estrogen, which can promote seed growth.

科学家们认为这个实验能够奏效是因为怀孕的女性尿液里还有更高的雌性激素，它能够使得种子更快发芽。

Now going back to the question from the WHO, what evidence do we know that these tests work.

现在回到WHO提出的问题：判定这些检测有效的证据是什么？

So, how exactly do these tests work?

那么，这些测试究竟是如何工作的呢？

So they got together, made the test work, and.

所以他们聚在一起, 做了测试工作, 然后。

The new blood test works by detecting something called auto-antibodies.

新的血液测试通过检测一种叫做自身抗体的东西起作用。

That's the way IQ tests work.

这就是智商测试的工作原理。

The new blood test works by detecting something called auto antibodies.

新的血液测试是通过检测一种叫做自身抗体的东西来进行的。

A multiple choice test requires no actual knowledge of the subject matter, but only a knowledge of how multiple choice tests work.

- 多项选择测试不需要对主题有实际了解，只需要了解多项选择测试的工作原理。

HIV tests work by detecting either antibodies - which are used by your body to fight off infections - or antigens - which are part of the virus.

HIV 检测的工作原理是检测抗体（ 人体用来抵抗感染）或抗原（ 病毒的一部分） 。

Besides doing all this note-taking stuff, these participants also took a working memory test to measure things like how many numbers they could keep in their heads for a few minutes.

除了做这些笔记，参与者还进行了一个工作记忆测试，测量诸如几分钟内，他们可以记住多少数字。