We would literally be in unknown territory. 不夸张地说 我们会处在一个未知领域

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
455. and avoid crossing into this territory.
     避免这一切的发生
456. Life on earth as we have never known it.
     我们作为地球上的生物从不知道这些

来自《家园 第二部分 Home Part2》第 453 行