exercises
词形变化：
形容词: exercisable | 动词过去式: exercised | 动词过去分词: exercised | 动词现在分词: exercising | 动词第三人称单数: exercises |
exercises
词形变化：
形容词: exercisable | 动词过去式: exercised | 动词过去分词: exercised | 动词现在分词: exercising | 动词第三人称单数: exercises |