1.再耽搁您太久.
2.让你再流连太久
这只是句子的一部分,要看前面是怎样一个情景才能更准确地翻译.
例如：
I know you're a busy person so I wouldn't want to keep you much longer.
我知道您是个大忙人,所以不敢再耽搁您太多时间了.
You must leave now,I couldn't keep you much longer.
你必须得离开啦,（虽然不舍,但 ..）我也不能让你再留连太久了.
两者意思可就截然不同喽.