"lengthy" in Chinese (Simplified)
冗长的漫长的
Definition
形容某事花费很长时间或包含过多细节，通常超过了必要或预期的程度。
Usage Notes (Chinese (Simplified))
‘lengthy’用于正式或中性语境，通常形容耗时或繁琐的事情（如会议、文档、说明），带有“冗长”意味。不能用来表示物理长度（那用‘long’）。常见搭配：“lengthy discussion”、“lengthy process”、“lengthy document”。
Examples
The meeting was very lengthy.
会议非常**冗长**。
He gave a lengthy explanation.
他做了一个**冗长的**说明。
The book is a bit lengthy for children.
这本书对孩子们来说有点**冗长**。
They had a lengthy discussion about the project.
他们就项目进行了**冗长**的讨论。
Applying for a visa can be a lengthy process.
申请签证可能是一个**漫长的**过程。
Sorry for the lengthy email—there was a lot to explain.
抱歉邮件写得太**冗长**了——有很多要解释。