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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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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Morbidity or mortality is typically the result of tumor bulk and mass effect on adjacent organ systems.

发病率或死亡率通常是肿瘤体积和质量对邻近器官系统作用来决定的。

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