One reason for the great allure of this painting is the hint of troubling duality .
这幅画拥有巨大吸引力的一个原因就是，令人费神的二元性暗示。
This choice is motivated by a deep knowing of the great value of experiencing duality .
这种选择是被一种对经历二元性的伟大的价值的深刻的理解而激发的。
Greenpeace is calling attention to a central flaw in the duality of technology - its ability to help the world while , at the same time , running off the same old , dirty , polluting power sources that harm it .
It evokes , too , the duality of sontag herself : the public figure , whose provocative essays can seem to readers intimidatingly confident , and the mind that made them which , as her diaries reveal , was unusually full of pain .
