1.Is a timeless classic, no doubt, the classical variations, is both cautious and risky experiment.
经典是永不过时的，无疑，将经典变奏，是既稳阵又冒险的尝试。
2.And two of the largest sex differences were in "intellectual risk taking" and "participation in a risky experiment. "
最大的差别是在“智力冒险”和“参与风险实验”这两项。
3.Even more important, the policy-ramp prescriptions seem far too much like conducting a very risky experiment with the whole planet.
更为重要的是，渐进式政策开出的药方看起来太象是在对整个地球进行一种冒险的实验。