exercisern.训练者；体育器械exercisen.运动；练习；作业vt.运用vi.锻炼exercise scenario演习情景Exercise Database题库exercise attitude锻炼态度exercise for life终身体育exercise behavior锻炼行为exercise restrain采取克制态度exercise activity运动活动exercise for baby婴儿体操exercise boundary自由边界exercise immunity运动免疫