如果一种试验没有成功，扔掉它，再试试别的吧。

If one experiment doesn’t work you throw it away and try something else.

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第一次试验没有成功。

The first try was not successful.

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试验项目的结果还没有制成表格。

Results for the test programme haven't been tabulated.

《柯林斯英汉双解大词典》

If you toss a coin twice and the first experiment doesn't influence the second, we say they're independent and there's no relation between the two.

如果你抛两次硬币,第一次的结果并不影响第二次的结果,所以我们说他们是相互独立的,这两次试验没有关系

耶鲁公开课 - 金融市场课程节选

Independent experiments are experiments that occur without relation to each other.

独立试验的概念就意味着每一个试验,和其他试验的结果没有关系

耶鲁公开课 - 金融市场课程节选

Another approach which is still investigational, in that it's being tried for many diseases but not yet clinically used in any particular one, is maybe you don't need to introduce a whole virus or pieces of a protein at all.

另一种方法目前仍处于试验阶段,该方法即将试用于许多疾病,但还没有对某一特定疾病进行临床试验,那就是无需引入整个病毒,或者根本不用引入蛋白质片段

耶鲁公开课 - 生物医学工程探索课程节选