The main purpose of his experiments was to learn to transplant a human heart and lungs.

他进行实验的主要目的是为了掌握人类心脏和肺的移植。

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Not long ago this process would have taken weeks, says Fabiola Gianotti, the spokeswoman for ATLAS, one of the four main LHC experiments.

ATLAS的女发言人法比奥拉•吉阿诺蒂说，在不久之前这项工作可能需要数周才能完成。ATLAS是LHC的四个主要实验项目之一。

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The main components of the scientific method are that experiments should be repeatable, so other scientists can verify or nullify the results;

这种科学方法的主要组成部分是：实验应该是可重复的，以便其为他科学家证实或否定其结果；

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The main lesson of these experiments in philanthro-journalism is that giving up on profit does not mean an end to the concern about either money or readers.

ECONOMIST: Philanthro-journalism

The main purpose of thought experiments, though, is to show that a problem is soluble in principle and so to encourage others to try to solve it in practice.

ECONOMIST: The universe, it appears, may not be alone

In the end, the main problem is not that designing good experiments is hard.

ECONOMIST: News from the lab