There was a loud noise outside the classroom. The physics teacher had to raise his voice: "Light travels much faster than sound."

教室一片嘈杂声，物理老师只得提高了声音说：“光的传播速度比声音快得多。”

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There was a loud noise outside the classroom. The physics teacher had to raise his voice :"Light travels much faster than sound ."

教室外一片嘈杂声，物理老师只得提高声音说：“光的传播速度比声音快得多。”

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As a member of the city, we should raise the public awareness of ethics, obey the traffic rules. Do not run the red light …

作为市民我们应当提高道德意识，遵守交通规则，不闯红灯…

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Joining Forces has been a wonderful instrument just to raise the bar, to shine a light on these issues.

WHITEHOUSE: First Lady Michelle Obama and Dr. Jill Biden Speak on Military Spouse Employment | The White House

Pinchuk compared Yushchenko's vow to the now-notorious trial and conviction of Mikhail Khodorkovsky, certain to raise a few hackles in light of Ukraine's slightly, well, bittersweet relationship with its mighty neighbor to the north. ( see : " Steel Tycoon Warns Ukraine: Act 'European'--Not Russian").

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"We want to raise awareness about this issue and shine a light on how important it is to keep the internet free and open to one and all, " said Raging Granny Gail Sredanovic.

BBC: Protesters denounce Google plan for 'two-tier internet'