Destruction of the environment is one of the most serious challenges we face.

环境的破坏是我们所面临的最严峻的挑战之一。

《牛津词典》

A report from IPCC, the UN's climate science body, showed that if global temperatures rise more than 1.5℃ by the end of the century, poor countries will likely face very serious challenges, including the disappearance of whole communities and millions of early deaths.

联合国政府间气候变化专门委员会的一份报告显示，如果到本世纪末全球气温上升超过1.5℃，贫穷国家将可能面临非常严峻的挑战，包括整个社区的消失和数百万人的过早死亡。

youdao

The shipping industry faces serious challenges on reliability.

航运业面临的严峻挑战就是准时性。

youdao

Saying serious challenges remain, the risks to recovery from fiscal adjustment across several major economies.

VOA: standard.2010.06.27

"Today I say to you that the challenges we face are real, they are serious and they are many.

VOA: special.2010.01.23

On the the 40th anniversary of Earth Day, this warming planet we live on is posing serious new challenges to human civilization: increasingly severe droughts, floods,and storms across the globe, and slowly rising ocean levels.

VOA: standard.2010.04.21

Despite persistently high unemployment, many CIOs cite talent shortages as one of their most serious challenges.

FORBES: The IT Skills Gap

So this victory does not erase the many serious challenges we face as a nation.

WHITEHOUSE: The Promise of Health Care Reform

There are serious challenges to being the first luxury property in a developing country.

WSJ: The Challenge of Pitching Nicaragua as the Next Paradise