Little by little he had given up taking any but walking exercise.

渐渐地，他放弃了除了步行以外的任何锻炼。

After the ceremony Colin always took his walking exercise and throughout the day he exercised his newly found power at intervals.

仪式结束后，科林总是进行步行锻炼，并在一天中不时地锻炼他新发现的力量。