The nation's infant mortality rate has reached a record low.

该国的婴儿死亡率已达历史最低。

《柯林斯英汉双解大词典》

However, Zaire, with its 90% mortality rate, was even worse.

然而，扎伊尔的情况更糟，死亡率高达90%。

youdao

The poor turned to water and gin and in the 1720s the mortality rate began to rise again.

由于穷人改喝水和杜松子酒，在1720年代，死亡率再次上升。

youdao

"The group that had the training initially had a fifty percent greater reduction in their mortality rate and that was greater reduction than the control group, the group that didn't have the training initially."

VOA: special.2010.10.20

One problem health care providers have here is getting good data on the maternal mortality rate.

VOA: standard.2009.11.10

Health officials in New York say the maternal mortality rate in the United States itself rivals that of poorer developed countries like Singapore and Ireland.

VOA: standard.2010.06.23

"Recent research produced by the CMI (Continuous Mortality Investigation of the Institute of Actuaries) indicates that the rate of mortality improvement is not slowing down as would be expected, " it said.

BBC: NEWS | Business | Pension plans ignore longer lives

For example, a Brazilian study published last year in the journal Explore, examined 28 other studies, found that religious and spiritual people had an 18% lower mortality rate, which represented an 18% reduction in mortality over the course of the study.

CNN: Family counters flesh-eating bacteria with faith

People with serious illnesses (and substance use disorders have a high mortality rate) are vulnerable.

FORBES: Addiction And Ethics: The Problem With Dr. Drew's 'Rehab'