In fact, you have to admit your unfitness for the race!
事实上，你还得承认自己的体力不足呢！
2
And yet some conservatives have turned it into a profane text, one that proves Mr Obama's unfitness for the great office he holds.
但一些保守者把它当做亵渎神圣的话，证明了奥巴马不能胜任其肩负的巨大职责。
3
Earlier this year, a study revealed that one in five of us has inherited 'unfitness genes' that mean no matter how often we pound the treadmill, we'll still be out of puff.