Rewriting the second and third papers is optional, but highly recommended.

第二、三篇论文可以自由选择重写，但强烈推荐。

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This is not part of the SSL standard, but is highly recommended to prevent a man in the middle attack (MITM).

虽然这不是SSL标准的一部分，但是这个步骤却是高度建议的，它可以防止中间人攻击。

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These two tools can add value to your overall assessment, but supplementing them with other input options is highly recommended.

这两个工具可以增加你全面评估的价值，但是强烈建议补充它们的附加的输入选项。

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The partners say there have been several candidates who looked great on paper and came highly recommended but weren't offered jobs because technical and interpersonal weaknesses surfaced during the selection process.

WSJ: A Few Troublesome Employees Can Outweigh the Good

An inquiry in 2008 concluded a nuclear submarine snagging the boat's trawl was the "highly probable cause" of the sinking, but the judges recommended the investigation be wound up, with no guilty party traced.

BBC: France probes US submarine link to fishing boat sinking