因为不知道对方是否已经感染，很多人并不认为自己有感染的风险，这种病毒你既看不到也触摸不到。
People think that they are not at risk for HIV infections because they don't know anybody (who has it), because you can't see it, you can't touch it.
答案是肯定的，贾森说道，因为你不知道对方发出好友请求的真正动机是什么。
Yes, said Jason, because you don't know what the person on the other end of that friend request is thinking.
对于我最好的朋友，我不确定我们是否有必要去看对方。因为我不知道当我们偶然相见时，对我们的关系是否有利。
To my best friends, I am not sure that we go to see each others are necessary. Because I don't know it is good or bad for our relation when we meet occasionally.
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