并且，一旦备有药物，医生须设计测试去揭示病人患有的癌症类型，以此来发现药物是否对他的病例有用。

And once armed with the drug, you have to devise tests that reveal what type of cancer someone has, in order to find out whether the drug will work in his case.

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德国须削减税收，并且应采取更多措施来促进内需。

Germany should cut taxes and do more to boost domestic demand.

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但是奥巴马先生也须做大量努力来证明自己。

But Mr Obama also has a lot to prove.

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