They shouted him down when he tried to explain why Zaire needed an interim government. [VERB noun PREP.]

当他试图解释为什么扎伊尔需要一个过渡政府时，他们大声叫嚷着把他的声音盖过去了。

There were scuffles when UDF hecklers began to shout down the speakers. [VERB PREP. noun]

来自联合民主阵线的诘问者开始对演讲者大声起哄时，引发了多次冲突。