"at great length"的意思是详细地，冗长地。
英文范文如下：
I remember that day clearly. I was sitting at my desk, at great length, going over my notes for the upcoming exam. I had been studying hard all week, and I was eager to make sure I had everything covered. As I went through my notes, I couldn't help but notice how much information there was to remember. It seemed like there was always something new to learn, but I knew that if I focused and didn't get distracted, I could do it.
Eventually, the exam day arrived, and I was nervous but excited to see how well I had done. As I walked into the exam room, I took a deep breath and reminded myself to stay calm and focus. I started going through my notes, and as I answered each question, I could feel my anxiety starting to subside. After the exam, I knew that I had done well, and it was all thanks to the time I had spent at great length studying.
总的来说，“at great length”通常用于形容某个人或事物花费了大量的时间和精力，或者详细地、冗长地描述或处理某事。在上述英文范文中，作者详细地复习了即将到来的考试，最终在考试中取得了良好的成绩。
at great length的意思是在很长的篇幅中，详细地，冗长地。
在英文范文中的应用示例如下：
“I explained the process at great length in the memo.”（我在备忘录中详细地解释了整个过程。）
以上内容仅供参考，如需更多信息，可以到英文网站查询或请教专业人士。
“at great length”的意思是详尽无遗地；冗长地。没有最新的范文，但是可以为您提供一个例句，用于说明该短语的使用方法：He discussed the issue at great length with him, going over every detail. 他详尽地与他讨论了这个问题，把每一个细节都讲了一遍。