n.死亡率；死亡數(shù)目；必死性

Infant mortality is still very high in some developing countries. 某些發(fā)展中國家的嬰兒死亡率仍然很高。

If this disease spreads, the doctors fear that there'll be a high mortality. 如果這種病傳播開來，醫(yī)生們擔(dān)心死亡率將會(huì)很高。

The mortality from lung cancer is increasing. 肺癌死亡人數(shù)在增多。

n.不朽；永生