n[U]
in moderation
if you do something in moderation, such as drinking alcohol or eating certain foods, you do not do it too much
≠ to excess
　Some people think drinking in moderation can prevent heart disease.
formal control of your behaviour, so that you keep your actions, feelings, habits etc within reasonable limits
moderation in
　Moderation in diet is the way to good health.
　He encouraged moderation and toleration on religious issues.
formal reduction in force, degree, speed etc