Studies of both animals and humans have shown that sex hormones somehow affect the stress response, causing females under stress to produce more of the trigger chemicals than do males under the same conditions.

　　①Studies of both animals and humans have shown that sex hormones somehow affect the stress response, causing females under stress to produce more of the trigger chemicals than do males under the same conditions.

　　②In several of the studies, when stressed-out female rats had their ovaries (the female reproductive organs) removed, their chemical responses became equal to those of the males.

　　参考译文

　　①对动物和人类的研究表明：性激素以某种方式影响压力反应，使雌性在承受压力时比处于同等条件下的雄性分泌更多触发不良反应的化学物质。

　　②一些研究显示，如果将承受压力达到极 限的雌鼠的卵巢(雌性生殖器官)切除，那么其体内的化学反应会和雄鼠相同。