Even if the takeover of United Biscuits goes ahead smoothly, commercial success may prove elusive.

即便是对联合饼干的收购能够平稳进行，想达到商业上的成功也不容易。

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Instead, more trials are now required, with more time and more money required to prove a survival advantage that may prove elusive.

与之相反，现在需要更多的试验、更多的时间和更多的钱来证明一个药物所具有的生存优势，这种优势也可能极其渺茫。

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Yet if the resulting income gains prove elusive to wage and salary workers, that promise may not be realised.

假如工薪阶层和劳动者也搞不懂最终到的收入所得，这种诺言可能是实现不了的。

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While the rewards for advising on deals remain large, however, genuine independence may prove elusive.

ECONOMIST: Face value

And even if the Tories can come up with a firm and coherent agenda on the constitution, electoral success may still prove elusive.

ECONOMIST: The Conservatives: Flatliners | The

But in Europe, a clear-cut solution to the nursing crisis may prove to be elusive, as governments and international organizations have very different approaches to dealing with the problem.

CNN: Where have Europe's nurses gone?