Copying data is a relatively expensive, time consuming task.

复制数据是一个比较昂贵耗时的任务。

youdao

Sue: It's Sandy, mum. He's copying me all the time.

苏：是桑迪，妈妈。他老学我的样。

youdao

Sue: It's Sandy, mum. He's copying me all the time.

苏：是桑迪，妈妈。他老学我的样。

youdao