Milk cows jumping over Earth's natural satellite was a neat idea but highly improbable.

奶牛跳过地球的天然卫星是个“好主意”，但可能性非常小。

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It's highly improbable, but even Hawking admits it is theoretically (i.e., mathematically) possible.

尽管这种可能性微乎其微，但是即使是Hawking也承认这在理论上(也就是在数学推导上)是可能的。

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But banking sources tell me it is highly improbable that - in these risk-averse times - the FSA will give a guarantee that NBNK would receive advanced status on any set timetable.

BBC: Co-op set to become big banker

But the Hitchhiker's Guide to the Galaxy has never had a problem with highly improbable events.

BBC: And another thing...