讽刺的是，第三次发现的突变似乎抵挡疾病，降低风险高达百分之五十。
Ironically, the third mutation discovered appeared to shield against the disease, decreasing the risk by as much as 50 percent.
这个引用人体抵挡疾病和入侵的巧妙能力的比喻很贴切：两位研究人称，人们为努力去改变时总会受到内部力量的阻碍。
Their metaphor, invoking the body's exquisite ability to ward off disease and invasion, is apt: Our best efforts to change, the researchers claim, are routinely overwhelmed by forces within us.
这个引用人体抵挡疾病和入侵的巧妙能力的比喻很贴切：两位研究人称，人们为努力去改变时总会受到内部力量的阻碍。
Their metaphor, invoking the body's exquisite ability to ward off disease and invasion, is apt: Our best efforts to change, the researchers claim, are routinely overwhelmed by forces within us.
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