重点讲解:
1.in fact实际上
People occasionally tell you, "Do that in your free time, "but in fact there's no such thing as"free"time.
人们有时候会对你说:“在你空闲的时候做那件事吧,”但是,实际上这种“空闲”时间是没有的 。
2.in response to响应;回答
In humans melatonin levels rise at night, in response to darkness and cues from the circadian clock.
人类的褪黑激素水平在夜晚上升,以响应黑暗和昼夜节律钟发出的信号 。