Is excessive exploitation of our 是我们过度利用

346. The concentration of carbon dioxide...
     近几十万年以来
347. Hasn't been so high for several hundred thousand years.
     二氧化碳浓度从来没有如此之高
348. Humanity has never lived in an atmosphere like this.
     人类也从未在这种大气环境下生活过
349. Is excessive exploitation of our
     是我们过度利用
350. Resources threatening the lives of every species?
     资源威胁到了地球上的物种吗
351. Climate change accentuates the threat.
     气候的改变加剧了这种威胁
352. By 2050, a quarter ofthe earth's species...
     到2050年 地球上四分之一的物种

来自《家园 第二部分 Home Part2》第 349 行