Cyber-threats "pose one of the gravest national-security dangers" the country is facing.

网络威胁是这个国家正面临的“最严重的国家安全威胁之一”。

youdao

He talks of the most impossible things in the gravest possible manner.

他会带着最严肃的表情告诉我一些最离奇的事情。

youdao

With so many DAMS, it is hard to know where the gravest danger lies.

有这么多的危险水坝，很难说最最危险的是哪座。

youdao

"But this is the path to guarantee that the gravest scenarios of the last time will not repeat.

VOA: standard.2010.06.24

That was the gravest crisis we faced outside the national security area.

这场危机是我们在国家安全领域外,面对的最严重的危机。

普林斯顿公开课 - 国际座谈会课程节选

"And that's the duty of everyone who believes in justice and in deterring the gravest and most serious types of crimes that the United Nations was partially set up to prevent after the Second World War, and continues to fail to prevent."

VOA: standard.2009.09.07

She knew about collateral damage, knew that the injuries people saw were never the gravest.

NEWYORKER: The Visitor

In its later report the Standards Committee called it the "gravest case" it had ever investigated.

BBC: No privilege for disgraced former MP Denis MacShane

The committee said it was the "gravest case" which has come to them for adjudication.

BBC: Denis MacShane 'not above law', says MP standards watchdog