hook up 托福

Ali was hooked up to an electrocardiograph.

阿里被连到了心电图仪上。

All the speakers hook up to a single amplifier.

所有喇叭都接在单一的扩音器上。

The wireman hooked up a telephone.

路工已把电话装好并接通。

The gas was hooked up.

煤气已装好并接通了。

He hooked up the doorbell.

他装好了门铃。