Our second scientific expression is " acid test" .

我们的第二个科学表达是" acid test" （酸性试验）。

An acid test can take many forms.

" Acid test" 可以采取多种形式。

Passengers on flights to China are required to provide negative nucleic acid test results before boarding.

搭乘来华航班的乘客在登机前必须提供核酸检测阴性证明。

The acid test, however, was to try out the stents in animals.

然而，关键的测试是在动物身上试验支架。

The group has urged further expanding nucleic acid tests to identify asymptomatic infections.

领导小组敦促进一步扩大核酸检测，以确定无症状感染者。

The artist was also seen taking a nucleic acid test in self isolation Monday.

周一，人们还看到这位艺术家在自我隔离中接受核酸测试。

The antigen tests will be promoted in addition to regular nucleic acid tests.

除常规核酸检测外，还将推广抗原检测。

And a school canteen worker tested positive during the city's screening with nucleic acid tests.

而在本市的核酸检测筛查中，一名学校食堂工作人员的检测结果为阳性。

For example, beating the national champions was the acid test for the basketball team.

例如，击败全国冠军是对篮球队的严峻考验。

An acid test also can test the value of something.

" Acid test" 也可以测试某物的价值。