For example, during the day a manic-depressive person might devote himself to his job with great zeal, making a torrent of suggestions, only to return home in the evening and feel as though sunken in a deep abyss from which there is no escape.
例如，白天是點子百出、意見滔滔不絕的狂熱上班族，下了班後，夜晚卻如墜深淵、情緒低潮不可自拔。