例句：

　　This is Mission Control calling the space shuttle Discovery.

　　這是地面指揮中心呼叫航天飛機“發現號”。

　　He didn't even have the intelligence to call for an ambulance.

　　他連呼叫救護車的頭腦都沒有。

　　I called in at my local on the way home.

　　我回家途中去了我住處附近的酒吧。

　　Call it what you will, it's still a problem.

　　不管怎么說，這仍然是個問題。

　　There were calls for major changes to the welfare system.

　　有人要求對福利制度進行重大改革。