The prisoners used to call out to each other from their cells.以前，囚犯们就在自己的牢房互相喊来喊去。I had to call out a plumber to check the central heating system.我不得不叫来水暖工检查集中供暖系统。We had to call out a doctor.我们不得不请一位医生来。He used to call out in his sleep.他过去经常在睡梦中大声呼叫。