The machine must be out of order.

机器一定出毛病了。

The machine must be out of order.

这机器一定出毛病了。

The phone seems to be out of order.

这个电话好象出了故障。

The phone seems to be out of order.

电话好像出故障了。

The air conditioner seems to be out of order.

空调器好像出毛病了。