They are subject to climatic occurrences such as weather systems, which impact upon hemispheres as a whole, and from continent to continent.

它们受到气候变化事件的影响，例如天气系统能影响整个半球和各大洲都有影响。

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If feeding is stopped during severe weather, birds used to relying upon the feeders must starve.

如果在恶劣天气停止喂食，习惯依赖喂食的鸟儿就会挨饿。

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The hot weather of July had crept upon them unawares, and the atmosphere of the flat vale hung heavy as an opiate over the dairy-folk, the cows, and the trees.

七月的炎热天气在不知不觉中来到了人们身边，平坦山谷中的大气好像麻醉剂一样，既沉重又沉闷，笼罩着奶牛场的人们、奶牛和树木。

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Councillor Brian Phillips said the work is dependent upon weather conditions.

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Might not sound important, until you realize that our farm production is critically dependent upon stable weather patterns, this year promises to be one of the worst for drought in many areas since the dust bowl days from the Depression.

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The weather has turned colder, and winter is upon us.

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