6月作为联合名为查柯曼特的欺诈侦察公司解决之道的一部分，雅虎承诺加大打击点击欺诈的力度。
Promised to intensify its efforts to fight click fraud as part of a settlement with CheckMate, a fraud-detection firm.
柯林斯字典里查来的英语解释，电影或磁带就是指母带。可以用来做其他拷贝。在专业词汇里面的意思应该跟上面一样的。
A master copy of something such as a film or a tape recording is an original copy that can be used to produce other copies.
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