例117　In 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.

【结构分析】这句话中In several of the studies和when stressed-out female rats had their ovaries (the female reproductive organs) removed都是状语，their chemical responses是主语，became是谓语，在when的状语从句中，stressed-out female rats是从句中的主语，had something removed是谓语。

【亮点回放】此句话的亮点在于时间状语从句的使用，很有特色。

【核心词汇】

in several of the studies　在几项研究中

stressed-out female rats　受到压力的雌鼠

ovaries　卵巢

the female reproductive organs　雌性的生殖器官

chemical responses　化学反应

【参考译文】在几项研究中，当受到压力的雌鼠的卵巢（雌性的生殖器官）被拿掉后，它们的化学反应变得和那些雄性的一样了。