进一步，如果S是半素环，那么M的每个极大核是M的一个直和项。

Further, if S is a semiprime ring, then every maximal kernel of M is a direct summand of M.

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其他沿岸国家一直以来不满，肯尼亚和埃塞俄比亚尤其如此，而制定一项对所有人都更公平的新条约的所有努力都失败了。

The other riparian states have been unhappy ever since, Kenya and Ethiopia particularly so, and all efforts to draw up a new treaty, fairer to all, have failed.

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管理用户和组并控制它们的访问一直都是操作系统中一项关键任务。

Managing users and groups and controlling their access is always a critical task in operating systems.

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