But could an ability to store fat have actually played a crucial role in our evolution?然而储存脂肪的能力真的在我们的进化历程中起到了关键作用吗
play a role:起作用;扮演角色
He was invited to play a role in this TV play.
他被邀请在这个电视剧里扮演一个角色。
According to obesity geneticist Dr Eric Ravussin,our hunter-gatherer ancestors had to live off whatever they could find.根据肥胖遗传学家埃里克·鲁瓦森博士的理论,我们以采集狩猎为生的祖先,必须靠食用他们能找到的东西为生
according to:按照;根据
He ranged the books according to size.
他照大小顺序排列这些书。
live off:依赖 ... 生活
Most of the Asians live off rice.
多数亚洲人以大米为主食。
I live off the money from my first book.
我靠我第一本书赚的钱生活。
humankind has been subjected to was an important natural selective process人类则要经历重要的自然选择过程
be subjected to:受到; 经受
She was subjected to indignity and humiliation.
她受到侮辱和羞辱。
This country was once subjected to foreign rule.
这个国家一度曾受外国统治。