But global warming has raised the possibility that domestic produce could be seriously affected by rare weather events more often.

但全球变暖增加了国内农产品更频繁地受到罕见天气事件的严重影响的可能性。

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But global warming made things even hotter and drier.

但是全球变暖让一切都变得又暖又干。

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The environment is largely unspoiled but global warming is having a rapid impact.

不过目前那里的环境基本上没受过污染，除了全球气候变暖正在扩大的影响。

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But we need to become more concerned about global warming, pollution,

我们需要更多关注全球变暖、污染问题，

有很多活动 - SpeakingMax英语口语达人

But global warming is changing Huascaran National Park, and the spectacular snowfields of the Cordillera Blanca are in retreat.

BBC: Trekking Peru��s Santa Cruz trail

But global warming may have numerous beneficial effects.

CENTERFORSECURITYPOLICY: ��Beyond Kyoto��

President Obama is justifiably afraid to alienate swing voters in the presidential debates by doubling down on discredited global warming claims, but global warming alarmism is indeed the pink elephant in the room every time Obama is forced to defend his suppression of affordable conventional energy.

FORBES: Obama Unites Global Warming Alarmists, Skeptics In Presidential Debates