die-off

基本解释

Severe winters and summer droughts in 2000, 2001, and 2002 resulted in massive livestock die-off and zero or negative GDP growth.
2000年、2001年和2003年三年连续的冬季严寒和夏季干旱使大批牲畜死亡，GDP出现负增长。
That's according to the U. S. Department of Agriculture. Such a die-off is no longer unusual. About a third of honeybees have perished every winter since 2006.
这样的大规模死亡已不是新鲜事，因为自从2006年起，每年都有大约三分之一的蜜蜂死亡。
The die-off, which occurred worldwide about 250 million years ago at the end of the Permian period, was even more extensive than the one that wiped out the dinosaurs.
这场全球性的大灾难发生于2亿5千万年前的二叠纪晚期，其范围甚至比导致恐龙灭亡的那场灾难还要来的广泛。

Without new conservation measures, there could be a massive die-off of Caribbean frogs within 15 years, warned Adrell Nunez, an amphibian expert with the Santo Domingo Zoo in the Dominican Republic.
NPR: Alarm Over Vanishing Frogs In The Caribbean
The sell-off is die to the company cutting its dollar forecast for the year.
FORBES: Retail Sales And Jobless Claims Underwhelm But Stocks Stay Positive
Januvia and Galvus appear not only to spare patients the side effects of older medicines, but also to help preserve the beta cells in the pancreas--the cells that produce insulin, and that often die off in diabetes patients.
FORBES: Diabetes Duel