up to speed不是指“提速”，其正确的含义是了解最新情况；跟上进度。

【例句】
Those in charge deluded themselves they were up to speed.
那些负责人自以为掌握了最新情况。

We arranged for some home tutoring to get him up to speed with the other children in his class.
我们安排了一些家庭辅导，以帮助他跟上班里其他孩子的进度。