Complex sentence: Unlike sensuality, which concentrates on the pleasures of the senses, eroticism is concerned with heightening those pleasures, and may involve a delay in sexual gratification to intensify the satisfaction level by extending the period of yearning desire.
Split into simpler sentences: Unlike sensuality, which concentrates on the pleasures of the senses, eroticism is concerned with heightening those pleasures. To achieve that objective, eroticism can involve a delay in sexual gratification in order to intensify the satisfaction level by extending the period of yearning desire.