s relatively long in duration; tediously protracted
a. 冗长的, 漫长的
1. The meeting was lengthy and many people lost interest.
这个会议很长,很多人失去了兴趣。
2. She wrote a lengthy report on the project's progress.
她写了一份关于项目进展的长报告。
3. After a lengthy discussion, they finally reached an agreement.
在一番长时间的讨论后,他们终于达成了协议。