核问题有着十分复杂的历史背景和现实原则，这一问题的解决需要一个过程，而且很可能是一个曲折的过程。

The Korean nuclear issue has a very complicated historical background and realistic principle, and the solution to this issue requires a process, most probably a twisted process.

youdao

基于证书的身份验证并不合适，因为客户可能很多，而且是动态的，事先为每个客户分发适当的证书不太现实。

Certificate-based authentication isn't appropriate, because the clients are likely to be numerous and dynamic; it would not be feasible to distribute a suitable certificate to every client in advance.

youdao

我不确定该怎么解释，但这有可能是因为我觉得他们和我最为相似，而且现实。

I'm not sure how to explain it, but it may be because I feel that they are the most similar to me, and down-to-earth.

youdao

And you know, they might not be exactly like what you expected them to be online.

而且，现实生活中的他们（她们）可能和你在网上见到的那个人不完全一致。

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