快讯-2013年英国第九届SWANSEA国际摄影大赛成绩公布 ... 刘跃 巴扎理发师 Mart Barber A 宋志国 养蜂人 Beekeepers A 万毅 兄妹 Sibling A ...
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No one can say for sure why the FDA has ignored repeated pleas from Congress, beekeepers and the honey industry to develop a U.S. standard for identification for honey.
没有人知道FDA无视国会、养蜂人和蜂蜜行业一再请愿要求建立鉴定蜂蜜统一标准的确切原因
The problem was first noticed by beekeepers in America and is a lot more serious than it at first seems.
这个问题首先是由美国的养蜂人注意到的,而且比乍看起来严重得多。
It can be positive (a beekeepers' bees pollinating neighboring crops) or negative (pollution from a power station).
外部性可能是有益的(养蜂人的蜜蜂为邻居的庄稼授粉),也可能是有害的(如来自发电厂的污染)。
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