求翻译：本文是一篇关于全球变暖的短文，讲述了关于全球变暖的一些问题，同时，给出了一个事实：全球气温并不是一直都在变暖，而且这种温度变化会随着时间而改变，但不一定就一直是上升。是什么意思？

This article is an essay on global warming, about some of the problems of global warming, at the same time, given the fact: global temperatures are warming, not always, and this temperature change will change over time , but not necessarily been rising.

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This article is one changes the warm short written work about the whole world, narrated has changed the warm some questions about the whole world, simultaneously, has given a fact: The global temperature is not continuously all is changing warm, moreover this kind of temperature change can change al

This article is about the passage of global warming about questions about global warming, at the same time, given the fact that didn't always warming in global temperature and this temperature change will change over time, but does not have to be increased.

This article is an essay on global warming, about some of the problems of global warming, at the same time, given the fact: global temperatures are warming, not always, and this temperature change will change over time , but not necessarily been rising.