请于2010年四月十二日或之前填妥问卷。
Please submit this questionnaire on or before 12 April 2010.
四月十二日是值得纪念的，因为我们班在那一天有一次有意义的经历。
April 12 is memorable because our class had a meaningful experience on that day.
一个管辖外国投资者兼并和收购中国企业的临时规则在今年的四月十二日生效。
A temporary rule governing( ) with and acquisitions by foreign investors took effect on April 12 this year.
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