因为所爱的人是幸福的主要来源，这个人同样也是对我们幸福的主要威胁：比起其他任何人，所爱的人更能毁灭我们的幸福。

Since the beloved is a major source of happiness, this person is also a major threat to our happiness: more than anyone else, the beloved can ruin our happiness.

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在南极地区，由于海洋温度的上升和海冰的融化，露脊鲸主要的食物来源南极磷虾受到了严重威胁，这反过来也危及到了鲸类的生存。

Krill, the whales' main source of food, are threatened by higher ocean temperatures and melting sea ice around the Antarctic, which would in turn hurt the whales' chances of survival.

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此行目的旨在说服各国领导人：南美洲面临的真正安全威胁，来自以贩毒为主要经济来源的武装叛乱分子及其同盟，而非美国。

His aim is to persuade them that the real security threat in South America comes from drug-financed insurgents and their Allies, not the United States.

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