但你必须知道，互联网上仍有不少针对Mac系统的恶意软件。

But there are other kinds of Mac malware out there that you should know about.

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您必须知道抵押贷款，但你知道反向抵押贷款？

You must know mortgage, but do you know reverse mortgage?

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您必须知道抵押贷款，但你知道反向抵押贷款？

You must know mortgage, but do you know reverse mortgage?

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