These maybe totally innocent attempts at connecting from a local machine within your network or a brute force attempt from an unknown host.

这些可能是来自您的网络中本地机器的完全无恶意的连接尝试，也可能是来自未知主机的强力连接尝试。

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New research identifies a previously unknown enzymatic mechanism that subverts the early host immune response and promotes pathogenicity by manipulating a common signaling pathway in host cells.

新的研究发现了一种通过操纵宿主细胞内的一种常见信号通路来破坏早期宿主免疫反应并提高致病性的以前未知的酶反应机制。

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The system used the behavior-based way, and it could defend new and unknown attacks in the condition of no refreshing rules continually. The system is a feasible scheme for protecting host.

系统采用分析应用程序行为的方法，在无需规则时时升级的情况下，能够防范新的和未知的攻击，是保护主机系统的一个可行方案。

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We now know that the hot-springs that sustain these "vent" ecosystems occur in every ocean basin and are host to hundreds of previously unknown animal species.

CNN: Probing the ocean's undiscovered depths