It is very necessary to set up a dangerous ice warning system for the offshore oil and gas production and ice management for the protection from the ice in winter in Bohai Sea areas.

建立渤海冬季油气生产危险冰情报警系统和防冰减灾的海冰管理方法是很有必要的。

youdao

The man yelled a warning to the boys on ice.

那个人大声向冰上的男孩们警告。

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A notice was placed by the river bank warning people to keep off the thin ice.

河边有一个布告牌，警告人们不要在薄冰上行走。

youdao

The Met Office has issued a yellow ice warning for Staffordshire but said temperatures should rise slightly through Tuesday.

BBC: Gritters out in Staffordshire after ice warning

Several inches of snow fell during Sunday and a yellow "be aware" ice warning is now in place for the Eastern region.

BBC: Bletchley in the snow - Jan 2013

The Met Office later issued a severe snow and ice warning for Grampian, the Highlands, Orkney and Shetland, Angus, East Lothian and the Borders.

BBC: Cold snap causing road problems in north of Scotland