exercise的ing形式怎么写
exercise的ing形式:exercising； exercising 词典释义 v.行使;使用;运用;锻炼;训练;操练;锻炼(身体某部位) exercise的现在分词； 例句: The exercise consists of stretching and contracting the leg muscles. 此项训练包括伸展和收缩腿部肌肉。 2. Their aircraft went down during a training exercise. 他们的飞机在一次训练中坠毁。...