How can one stand by and do nothing?

安能袖手旁观？

《新英汉大辞典》

One by one, they stand next to the tourist, towering over him, radiating at the camera.

一个接着一个的，身高盖过这名游客的她们站在他旁边，对着镜头容光焕发。

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Both he and Ms Hill stand by their stories. No one else knows which of them committed perjury.

他和赫尔女士两人都坚持自己的说辞，至今也没人知道到底谁犯了伪证罪。

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Oh, how the times have changed... its final mission saw Atlantis successfully deliver the Russian Mini-Research Module Rassvet to the ISS. She'll be prepped one last time to stand-by as a rescue ship for the upcoming (and final) missions of Endeavor and Discovery, but Atlantis' days in space are likely over.

ENGADGET: Space Shuttle Atlantis ends its run of predicting disaster for other NASA shuttles

So the question is, how can he now stand by idly and just say -- one of his former White House aides is running this thing that says that Mitt Romney may have had something to do with someone's death?

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney,

After stand-off Widders' two tries in the first five minutes, bolstered by one from Craig Huby, Salford pulled a score back through Karl Fitzpatrick.

BBC: Salford City Reds 22-28 Castleford Tigers