Therefore, users of these type of services are unknowingly exposing themselves to anyone who wants to listen in or access their confidential information.

因此，这类服务是用户在不知不觉中暴露出自己或任何人要听其接入机密资料。

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Again, you must be aware of the effect of a narrowing conversion when casting to a smaller type, otherwise you might unknowingly lose information during the cast.

同样地，当造型成一种较小的类型时，必须留意“缩小转换”的后果。否则会在造型过程中不知不觉地丢失信息。

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