警察拦住了抗议者，阻止他们进入大楼。

The police ___held ___back the protesters to prevent them from entering the building.

安保人员努力拦住等在音乐会场地外急切的人群。

Security personnel struggled to ___hold ___back the eager crowd waiting outside the concert venue.

在那场感人的告别演说中，她竭力忍住眼泪。

She tried hard to ___hold ___back her tears during the emotional farewell speech.