Would cause the greenhouse effect to race out of control, 温室效应将会到达失控的地步

448. Under its surface lies a climatic time bomb: Methane,
     其表面下埋藏着一种气候定时炸♥弹♥ 甲烷
449. A greenhouse gas 20 times more powerful than carbon dioxide.
     一种比二氧化碳厉害20倍的温室气体
450. If the permafrost melts, the methane released...
     如果永冻土融化 释放出甲烷
451. Would cause the greenhouse effect to race out of control,
     温室效应将会到达失控的地步
452. With consequences no one can predict.
     其结果无人能预知
453. We would literally be in unknown territory.
     不夸张地说 我们会处在一个未知领域
454. Humanity has no more than 10 years to reverse the trend...
     人类只有不到10年的时间去扭转形势

来自《家园 第二部分 Home Part2》第 451 行