The government has warned of stormy waters ahead.

政府已告诫说，以后的局势将很严峻。

《牛津词典》

Doctors around the world have warned of risks to elderly people, expectant mothers, and people with heart conditions.

世界各地的医生都对老年人、孕妇和心脏病患者的风险发出了警告。

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In Mexico in 1944, many experts warned of mass starvation in developing nations where populations were expanding faster than crop production.

在1944年的墨西哥，许多专家警告，发展中国家的人口增长速度快于粮食生产，会出现大规模饥荒。

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They warned of serious damage to the American form of government if the president was removed for political reasons.

VOA: special.2010.01.28

And the people are warned of God's jealousy.

他警告人们上帝的嫉妒之心。

耶鲁公开课 - 旧约导论课程节选

He is warned by the gods through seers,and by men of wisdom saying, don't investigate this question too far; you might be making a mistake.

诸神通过先知向他发出警告,身边的智者也向他谏言,不要太过深究这个问题,否则将铸成大错

耶鲁公开课 - 古希腊历史简介课程节选

And just last week, he released a report that warned of possible future leaks.

NPR: Alaskans Speak Up About Oil Field Shutdown

First Cymru warned of disruption to bus services, particularly in parts of south Wales.

BBC: Snow latest across the UK

Last year a National Audit Office report warned of "major risks" associated with the planned roll-out.

BBC: Which? warns of energy smart meter 'fiasco'