put the phone down 放下电话；在某人讲话中把电话挂掉

【例句】
He put the phone down and stood still for a moment, pondering.
他放下电话，站着想了一会。

I have my things together, and i'm gonna to leave now. I'm gonna to put the phone down.
我已经收拾好行李，我现在就要走了。我要挂电话了。