Where relevant, microbial challenge testing under testing conditions that, as far as possible, simulate patient use should be performed during development and documented in this section.

相应地，开发过程中应进行检测条件下的微生物挑战性试验(尽可能模拟病人使用情况)并写入本部分的文件。

youdao

It could be a challenge, but who said testing was easy?

但这是一项挑战，谁能说测试工作是简单的呢？

youdao

Several answers have been proposed to address this fundamental question, but none has been proven-and even adequately testing them has proven to be a formidable challenge.

已经有几个答案被提出来来回答这个基本问题，但是没有一个被证明——甚至对它们的充分的检验也被证明是一个可怕的挑战。

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"This nuclear testing poses a grave threat, a challenge to the NEPT regime and also poses a grave threat to the peace and security,stability, not only in the Northeast Asian region, but also the whole global community,".

VOA: standard.2009.05.25

Why is testing always a challenge?

测试为什么经常是个挑战呢？好？

麻省理工公开课 - 计算机科学及编程导论课程节选

And the 38-year-old said the step-up to league football has provided his current crop of players with an extremely testing challenge.

BBC: Buckle wants to strengthen squad

Winkler said that situation has improved at Microsoft, even as the company faces a more testing challenge because of the added functionality that's being built in to Windows.

CNN: Known vulnerabilities are No. 1 hack exploit

But then he will hone his preparations for Lytham and told gathered reporters after his Congressional win that he faced a testing challenge on the seaside links in northern England.

CNN: STORY HIGHLIGHTS