Cold is specially dangerous to citrus trees. Agricultural specialists at the University of California suggest putting paper or cloth around the trunk and central branches of young citrus trees.

寒冷对柑橘树特别危险。加利福尼亚大学的农业专家建议用纸和外套包裹小柑橘树的树枝和树干。

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A specially trained person has to pilot the ship out of these dangerous waters.

必须由一个受过专门训练的人把这艘船引离危险水域。

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We need a specially trained person to pilot the ship out of these dangerous waters.

我们需要一位受过专门训练的人把这艘船领出危险的水域。

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Compared to the early polar explorers of the 1900s, Fiennes's team will benefit from some innovative equipment, including boots with electrically-heated insoles, battery-powered heated clothing, radar to spot dangerous crevasse fields and a specially designed breathing apparatus to enable them to survive at temperatures that will regularly reach -70 degrees Celsius and perhaps even lower.

CNN: Veteran explorer sets off on 'The Coldest Journey'