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Environment, Environmental conservation, 回答者 mafabielex, 01:17, 1 August 2011, 3 回答
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Aerospace, Space flight, 回答者 tongers, 06:35, 16 April 2013, 1 回答
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Environment, Waste management, 回答者 francois.bartsch, 02:48, 16 January 2012, 1 回答
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Anatomy, Human body, 回答者 Melissa taing, 21:47, 30 June 2011, 2 回答
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Agriculture, , 回答者 vivian sun, 11:16, 14 April 2015, 1 回答
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Accounting, Payroll, 回答者 dawnmiglez, 04:23, 10 April 2013, 1 回答
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Legal services, General law, 回答者 norma armon, 11:12, 8 June 2011, 1 回答
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Automotive, Automobile, 回答者 Nexus, 20:42, 4 December 2011, 1 回答
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Agriculture, Agricultural programs & laws, 回答者 erictaylor2, 19:14, 24 April 2013, 1 回答
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Accounting, Payroll, 回答者 jennyteng, 05:59, 10 April 2013, 1 回答
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Economy, Economics, 回答者 Chithira, 06:24, 31 January 2012, 4 回答
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Agriculture, Agricultural programs & laws, 回答者 dawnmiglez, 13:53, 24 April 2013, 2 回答
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Aerospace; Engineering; Education, Space shuttle; Mechanical engineering; Knowledge, 回答者 Naveed, 15:36, 23 March 2014, 1 回答
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Politics, General politics, 回答者 LauraChovetB, 16:40, 15 November 2013, 1 回答
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News service, Journalism, 回答者 nadia.mondi, 03:08, 9 March 2014, 2 回答
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Automation, Industrial automation, 回答者 blakebishop, 03:24, 9 April 2013, 1 回答
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Software, Globalization software service, 回答者 thrall20, 06:54, 1 December 2012, 1 回答
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