If you study something, you consider it or observe it carefully in order to be able to understand it fully.
近义词analyse , examine
双语例句例： I know that you've been studying chimpanzees for thirty years now.
我知道你研究黑猩猩至今已有30年了。
例： I invite every citizen to carefully study the document.
我请求每个公民都认真学习这份文件。