He stood briefly to acknowledge the crowd and received a round of warm applause.

他稍事站立，以向观众致意，掌声雷动。

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He punched the air to acknowledge the raucous applause, signed an autograph and was off - and heading straight for more controversy.

BBC: What exactly goes on inside Ronnie O'Sullivan's head?

Give her a big round of applause. (Applause.) I want to also acknowledge your congressman, Mel Watt, in the house. (Applause.) Mel is doing an outstanding job each and every day.

WHITEHOUSE: President Obama on the American Jobs Act in Emporia, Virginia | The White House

And I also want to acknowledge the presence here of Dr. Mary Wakefield, who is our -- (applause) -- for those of you who are not familiar, she is the administrator of HRSA and our highest-ranking nurse in the administration -- (applause) -- and does absolutely great work.

WHITEHOUSE: Strengthening Our Health Care Workforce