to connect a machine to a power supply or to another machine, or to connect a person to a piece of medical equipment

Can we hook up to the electricity supply at the campsite? 我们的露营地能接通电吗？

Helen was unconscious and hooked up to a life support machine. 海伦不省人事，于是就给她接上了一台生命维持系统。

We just moved and I haven't hooked up my television yet. 我们刚刚搬了家，还没接上电视机。