Air pollution costs the global economy more than $5 trillion annually in welfare costs, with the most serious damage occurring in the developing world.

在福利支出方面，空气污染每年给全球经济带来的损失高于5万亿美元，而对发展中国家的损害最为严重。

youdao

I agree that individuals, governments and large companies, should all work hand-in-hand to address the serious problems facing the world today in terms of improving the environment.

我同意个人、政府和大公司应该全部携手合作，解决当今世界面临的在改善环境方面的严重问题。

youdao

The scientist is engaged in serious research to uncover the very nature of the physical world.

这位科学家正在进行认真的研究，以揭示物理世界的本质。

youdao

In the report, called "Heads in the Sand", the group says a serious decline in the supply of oil coupled with increasing demand and few new projects planned, means the world needs to move away from oil.

VOA: standard.2009.10.20

And it turned out that another, not quite as deadly, but still very serious disease called syphilis was also common in this part of the world at that time.

现在已知另外一种疾病,它并不完全致命但也很严重,它叫梅毒,在那时的一些地方也很常见

耶鲁公开课 - 生物医学工程探索课程节选

Unemployment is a serious issue in many parts of the world.

在世界很多地方，失业率都是一个严重的问题。

就业很难 - SpeakingMax英语口语达人

Successes also came in the serious world of diplomacy.

CNN: SPARKS IN THE DARKNESS

The Italian vote left the market place wondering when the next shoe will fall in the EU debt crisis that remains a serious matter in the world market place.

FORBES: A.M. Kitco Metals Roundup: Gold Sees Fresh Safe-Haven Demand on EU Worries; Bernanke on Deck

But everybody here is very keen to at least make people in the streets, in the Arab world and in the Muslim world believe that they are intensely serious about this.

CNN: Jane Arraf: Iraqi threats difficult to assess