It may be less damaging than previously believed.

它的破坏性可能比之前认为的要小。

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Health effects are now known to be associated with much lower levels of SO2 than previously believed.

目前已知的二氧化硫对健康影响的数值较过去所认为的要低。

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Meanwhile, revisions to previous months 'data indicated a better Labour market performance than was previously believed.

同时，前几个月的修订过的数据显示劳动市场表现比先前认为的好。

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The environmental damage caused by kerosene smoke may also be much worse than previously believed.

FORBES: Where There's Smoke, There's Fire: A Call to Action for Better Indoor Air Pollution Research

Dr Koshiba's second detector showed that neutrinos, previously believed to be massless, actually have a small mass.

ECONOMIST: The 2002 Nobel prizes: Windows on the world | The

France was previously believed to have about 100 elite troops in the region.

BBC: France confirms Mali military intervention