为完成第一次试验，您需要。

For your first experiment, you need to.

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他的第一次试验以失败而告终。

His first experiment ended up with failure.

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这是由于第一次试验结果被质疑。

There had been scepticism about the results of the first experiment.

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第一次试验结果充满了希望。

The results of the first experiment are very promising.

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第一次试验总不能在新生儿身上进行吧？

Would the first trials be in newly born children?

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第一次试验总算成功了！

My first trial was a big success!

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第一次试验没有成功。

The first try was not successful.

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第一次试验新发明（特别是火器）肯定会失败。

The first trial of the innovation ( specially firearm ) definitely fail.

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这种效果观察试验后，今年第一次，但不是以后的第二年。

This effect was observed after the first experimental year, but not after the second year.

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第一次脱离是一个试验。

This first time out is a test.

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第一次脱离是一个试验。

This first time out is a test.

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