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世界各地熄灯响应“地球一小时”
Cities worldwide unplug for Earth Hour
[ 2010-03-29 16:32 ]
A combination photograph shows buildings in the central business district before (top) and after Earth Hour in Singapore March 27, 2010. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. [Agencies]
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