But kissin□ is n□t just a romantic □esture—i□□al□o has□scientif□c□benefits. When we ki□s, our brai□s release□a □ockt□il of ch□mi□als□l□□□ oxy□ocin, dop□mine□ and s□rotonin,□kn□wn as t□e "l□ve hormo□es." □□ese□ch□□ical□□can□red□ce□str□ss□ bo□st mood,□and crea□e fe□l□ng□ of□att□chment and□□onding. Kissing □lso strengthens o□r □mmune system b□ □xposing us to a variety □f b□cteria th□□ can □□l□ bui□d□immunit□.版权意识的培养
□护设□与道具□2>
甲午惨败的背景
道德之争□/h2□