单词与短语：
1. slice vt.切成片；切下；划分
eg. Helen sliced the cake.
海伦把蛋糕切成片。
eg. Slice the steak into long thin slices.
将牛排切成长长的薄片。
2. yield v. 屈服，投降；
eg. I yielded to an impulse.
我没有忍住冲动。
eg. He may yield control.
他可能会放弃控制权。
3. monitor v. 监控；监视；监督
eg. You need feedback to monitor progress.
你需要利用反馈信息来监控进展。
eg. Peter Murray is in London and has been monitoring reports out of Monrovia.
彼得·默里一直在伦敦监听来自蒙罗维亚的新闻报道。
4. circadian adj. 生理节奏的
eg. The circadian clock must be rewound every day to keep it operating on a cycle of roughly 24 hours.
我们必须每天给生物钟上发条，以保持它按照每天24个小时运转。
eg. It isn't clear exactly how disruptions in circadian rhythm could influence body weight.
研究人员尚不完全清楚打乱生理节律是否会影响体重。
5. acuity n. 敏锐，敏锐度
eg. We work on improving visual acuity.
我们致力于提高视觉的敏锐度。
eg. All we've noticed are some cravings and an increased acuity in our senses.
我们所能注意到的只是一些我们变得敏锐的感官。