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。
Both these scientists warned that the sea-level rise would adversely impact 35 per cent of the world's human population as they live in coastal regions.
这两位科学家都警告说，海平面上升将对世界35%的人口产生不利影响，因为他们生活在沿海地区。
For decades, scientists warned that plastics are killing fish.
科学家几十年来一直警告说塑料会导致鱼类死亡。
A new form ofbacteria resistant to most antibiotics is spreading worldwide, scientists warned yesterday.
科学家昨日警告称，一种对绝大多数抗生素都具有抗药性的新型细菌正向全球传播。
But leading climate scientists warned on Tuesday that permitting a warming of that magnitude would actually be quite dangerous.
但一些知名气候科学家本周二警告说，容许这种幅度的升温实际上非常危险。
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。
The wreck of the Titanic will be nothing more than a rust stain on the bed of the Atlantic within 15 to 20 years, scientists warned today.
科学家12日指出，15至20年内，沉睡在大西洋海床上的泰坦尼克号残骸将被食锈菌彻底吞噬，只留下一个大锈斑。
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。
The swine flu virus will infect a third of the world's population if it continues to spread at its current rate, scientists warned today, as three more cases were confirmed in the UK.
今天，英国又确诊了三例猪流感病例，科学家们警告说，如果猪流感继续以现在的速度传播，它将会最终影响全世界三分之一的人口。
The world's rivers are so badly affected by human activity that the water security of almost 5 billion people, and the survival of thousands of aquatic species, are threatened, scientists warned .
世界上的河流被人类活动严重影响。接近50亿人口的饮水安全，还有成千上万的水生物种的生存都受到威胁。
Scientists warned that emergency cooling systems could fail and a reactor meltdown could occur.
科学家们警告说紧急冷却系统可能失灵，核反应堆的堆芯熔毁可能会发生。
Scientists warned that the increase in big-eaters means more food production - a major cause of CO2 gas emissions warming the planet.
科学家警告说“大胃口”的人越来越多意味着需要更多的食物——这是导致二氧化碳气体让全球变暖的主要原因。
Scientists warned that the increase in big-eaters means more food production - a major cause of CO2 gas emissions warming the planet.
科学家警告说“大胃口”的人越来越多意味着需要更多的食物——这是导致二氧化碳气体让全球变暖的主要原因。
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