Without knowing who is behind the activity, Harrison said that the targets - large, popular services rather than high-value ones - were not typical for a blackmailer.
由于不知道谁是此次攻击活动的操作者，Harrison称这次攻击的目标——大型普及型的服务而不是高价值的网站——并不是敲诈者所攻击的典型对象。
The disadvantages include the songs may not be the ones you desire to learn and the instruction is more general without any way of knowing where you are in your musical journey.
缺点包括歌曲未必是你的愿望，学习和教学更一般没有任何办法知道你在哪里在你的音乐之旅。
Yes, there are bullies everywhere. And the worst are the ones who take advantage of you without you ever knowing what they've done.
是的，持强欺弱无处不在。而最糟糕的是那些人从你身上获取利益而你却对他们的所作所为一无所知。
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