Using the design compression feature, this metric can be reduced to 11 MB of disk space, a savings of about 19 MB per mail file.

使用设计压缩功能，该标准将降低到 11 MB，每个邮件文件节省了近 19 MB。

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By current NASA estimates, a crewed mission to Mars needs to lift about twice the mass of the International space Station into space? Roughly 1.76 million LBS. (800 metric tons) of technology.

据美国宇航局最近的评估结果显示，载人登陆火星的任务需要把质量大约是国际空间站的两倍的物资送入太空，即大约176万磅(800吨)。

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For a map of compact metric space, topological entropy density is defined for infinite topological entropy.

在度量空间上，对于拓朴熵为无穷大的映射补充定义拓朴熵密度。

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