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。
2
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。
3
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.