A sense of control is the litmus test for success.

有无攀控感是成功的试金石。

Think of it as a litmus test for your exhalation.

把它想成检测呼气的石蕊测试。

As biodiversity declines worldwide, the Galapagos Islands are a litmus test.

随着全球生物多样性的下降，加拉帕戈斯群岛是一块试金石。

Today many English speakers use the term " litmus test" in conversations.

今天，许多说英语的人在对话中使用" litmus test" （石蕊试验）这个术语。

The final month before the big day is a litmus test for couples.

婚礼前的最后一个月最能考验新人。

They are seen as a possible litmus test for national elections in 2021.

他们被看做是2021年全国选举的试金石。

So, a litmus test is a kind of sign or indicator.

因此，石蕊试验是一种标志或指标。

Now, you may remember doing experiments with litmus paper in a high school science class.

现在，你可能还记得在高中科学课上用石蕊试纸做的实验。

This is a strip of paper that's been infused with a chemical called litmus.

反应一直发生，不过在任意给定的时刻。

A friend of mine has a single litmus test for dating -- her dog.

我的一个朋友对约会只有一种" 立见分晓的检验办法" ——她的狗。