three-point hitch control 三点挂接操纵机构
·2,447,543篇论文数据，部分数据来源于NoteExpress
Forty-three percent said the shootings in Connecticut make them more likely to support gun control laws, a 15-point increase from January 2011 following the Arizona gun rampage that wounded U.S. Rep. Gabrielle Giffords.
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