但参议员们在一份致谷歌的信件中提出就当前问题的严重性来看，传唤谷歌首席人物出席听证合情合理。

In a recent letter to Google, senators said the importance of the issue at hand justified the call for Google's top brass to attend.

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当前的大问题是这些后果的严重性。

The big question now is how serious those consequences are likely to be.

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