study in small sections

例句：

1. 1. I need to study for my exams before the deadline.
   在截止日期之前，我需要为考试做准备。
2. 2. She studied abroad for a year and gained valuable experience.
   她在国外学习了一年，获得了宝贵的经验。
3. 3. The scientist studied the effects of pollution on the environment.
   科学家研究了污染对环境的影响。