Comparing and reasoning between these two types of estimates is very difficult to do—perhaps impossible.

比较解释这两种估算是非常困难的——也许是不可能的。

youdao

Simply put: it is difficult, if perhaps impossible, to deliver accurate real time results of the magnitude that Google would expect.

实际上Google很难，或者不可能，把即时、准确的搜索结果传达给用户。

youdao

In a Naismith Basketball Hall of Fame full of political appointees as' contributors' to the game, Yao deserves enshrinement for a global impact perhaps impossible to measure.

有许多人因对篮球联盟有贡献而被提名入选名人堂，姚明完全可以凭籍其对全球大到无法衡量的影响而有资格入选其中。

youdao

Yet separating policy impact from all of the other factors that affect market returns is exceedingly difficult (perhaps impossible).

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Perhaps impossible for some.

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The other is the very difficult, perhaps politically impossible, supply side reforms that would be needed in the southern economies to get them growing again.

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