Last week the scientists warned that a third of the world's polar bears could disappear in the next 40 years.

上周，科学家们警告说，世界上三分之一的北极熊可能会在未来40年里消失。

youdao

Last week the scientists warned that a third of the world's polar bears could disappear in the next 40 years to melting Arctic sea ice.

科学家们上周警告称，随着北冰洋冰面的消融，全球三分之一的北极熊可能在未来40年内消失。

youdao

The scientists warned that the recovery of coral cover is expected to take a decade or longer, but it would take much longer to regain the largest and oldest corals that have died.

科学家警告说，大堡礁珊瑚恢复生机大概需要十年或更长时间。不过，对那些已死亡的最大和最老的珊瑚群来说，恢复生机要花费更长的时间。

youdao

Dr.Nicholas says before he left the FDA, he and other scientists warned against the routine use of CT scans.

VOA: standard.2010.04.07

The Copenhagen meeting drew about , 2,000 scientists from around the world, and the news they delivered was not encouraging as they warned of an increasingly warmer world with more frequent droughts, and food and health problems.

VOA: standard.2009.03.12

It may be instructive to remember that all of this global warming crisis frenzy really got heated up in the late 1980s, less than two decades after many scientists had warned during the mid-1970s that the next Ice Age was rapidly approaching.

FORBES: Yes! We Should Defund The U.N.'s Intergovernmental Panel On Climate Change

While Indonesia's right to rule in Irian is not contested by the United Nations, as in the case of East Timor, the country's own political scientists have warned for some years of the risk of Balkanization should the imbalances between eastern and western Indonesia not be addressed.

CNN: Nip This Rebellion

In early December, Saddam Hussein had all Iraqi scientists warned of the serious consequences that they and their families would face if they revealed any sensitive information to the inspectors.

CNN: Transcript of Powell's U.N. presentation