In normal cases; usually — used to indicate what typically happens when there are no special circumstances.
通常の場合、会議は午後に行われます。
Usually, meetings are held in the afternoon.
この方法は通常の場合に有効だが、例外もある。
This method is effective in normal cases, but there are exceptions.
通常の場合は入場料が必要だが、今日は無料です。
Normally an admission fee is required, but today it's free.