游泳或许是现有的最佳锻炼方式。Swimming is probably the best form of exercise you can get.缺乏锻炼会导致抑郁和疲劳。Lack of exercise can lead to feelings of depression and exhaustion.他们称划船是最佳运动,它可以锻炼每一处主要肌肉群。They call rowing the perfect sport. It ex...
We should take part in the peaceful uses of atomic energy.我们应该参与原子能的和平应用.The atomic reactor generates enormous amounts of thermal energy.原子反应堆发出大量的热能.The atomic theory is important.原子理论很重要....