You have to keep encouraging them and checking on them, and that's the toughest thing for some of our kids, like Danny, "she says."

你一直要鼓励他们并检查督促他们。就像丹尼一样，对一些孩子而言，让他们坚持上学是最难的事情。

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"It didn't violate Google's guidelines, and yet it was kind of unsatisfactory, like fast food when what you want is a real meal, " says Danny Sullivan, editor-in-chief of Search Engine Land, which chronicles the business.

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