Above all the games prove beyond doubt that sport and work are mutually exclusive activities .
总之，奥运会无疑证实了运动会和工作是相互排斥的活动。
Scientists have established beyond doubt that in rare cases cancer can be transmitted in the womb following the birth of a baby to a woman with leukaemia .
Although no smoking gun proves beyond doubt that iran is developing nuclear weapons the evidence gathered in a 12-page annex is hard to interpret in any other way .