The threat of mass mortality often never materialises.

大规模死亡的威胁从没突然出现。

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Phytoplankton cause mass mortality in other ways.

浮游植物还以其他方式造成大量死亡。

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And the inconvenience of an information breakdown, even if it were a great calamity, would not involve mass mortality - at least not for a while.

信息系统崩溃的不便，虽然是场大灾难，但不会造成大面积的伤亡，——至少现在还没有发生。

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