These are cases in which a worker is infected with HIV and has a history of occupational exposure, but did not have a test immediately before and after the possible exposure.

以下是某些具有职业接触史，并感染了HIV病毒的工作人员的病例，但他们在可能受感染的接触之前和之后都没有立即进行检测。

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Click the Options TAB, and specify the interval of your test, including some time before and after the test.

单击options选项卡，指定测试时间间隔，包含测试之前和之后的一段时间。

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They also carried out a brain-training-style test before and after seeing a segment from the film.

在观看电影一小段的片段之前和之后，他们还分别进行了类似脑部训练的测试。

youdao

Giteau's conversion made it 10-0 at the interval, James landing the hosts' first points on the resumption - and their first in 125 minutes of Test rugby - before giving way to Francois Steyn at fly-half after 55 minutes.

BBC: South Africa 15-27 Australia

They test nearby water wells to determine the level of naturally-occurring methane and other contamination before and after drilling in order to ensure that their drilling and completion activities have not caused any issues.

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Suppose you turn off your radio station a few seconds before 2pm and turn it back on a few seconds after the 30-second test concludes?

FORBES: Will Right-Wing Radio Skip The National Emergency Test?