Some students like to cram up history to get good marks .
英国华威大学的研究人员称，晚睡早起的作息或将埋下祸根，导致日后的疾病缠身。
The researchers from the university of warwick warned that trying to cram too much into one day by going to bed late and getting up early could lead to serious illnesses later in life .
他有时候早早地就来到约会地点，抓紧几分钟的时间观察外面的车辆。
He sometimes shows up early at his appointments so he can cram in a few minutes of spotting outside .
