列表表现缓慢，存在有多种原因。

There can be multiple reasons why lists perform slowly.

youdao

年轻人变得无家可归存在多种原因—它有可能是以下的任何一个，甚至于多个。

There are many reasons why young people become homeless - it could be any one or more of the following.

youdao

将XML数据映射到关系模型不是一件普通的任务(这也许就是市场上存在多种映射解决方案的原因之一)。

Mapping XML data to the relational model is not a trivial task (maybe one of the reasons for the variety of mapping solutions in the market).

youdao