3 sentences

1. 全球变暖威胁着人类的生存。

   quán​qiú biàn nuǎn wēi​xié zhe rén​lèi de shēng​cún.

   Global warming threatens human survival.

   Source: Dong Chinese Dictionary

2. 本文旨在探讨全球变暖的影响。

   běn​wén zhǐ​zài tàn​tǎo quán​qiú biàn​nuǎn de yǐng​xiǎng.

   This article aims to explore the effects of global warming.

   Source: Dong Chinese Dictionary

3. 专家指出，全球变暖是近年来极端天气的罪魁祸首。

   zhuān​jiā zhǐ​chū, quán​qiú biàn nuǎn shì jìn​nián lái jí​duān tiān​qì de zuì​kuí​huò​shǒu.

   Experts point out that global warming is the main culprit behind recent extreme weather.

   Source: Dong Chinese Dictionary