contact 和 connect 有什么区别？如果难以说明的话，请教我一下例句。

A connection often implies something a little more long-lasting. Contact is a shorter event. (This is mostly true, but probably not always.)

They finally connected the two highways.

It took me a long time to understand the connection between electricity and magnetism.

I contacted the CEO's assistant to arrange a meeting.

When the two wires contacted there was a big spark.