The people burst forth in a glad shout, repeating with one voice what the child had said.

人们欢呼起来，异口同声地重复着孩子说过的话。

The various opposition parties speak with one voice on this issue.

在这个问题上各反对党派众口一词。

They refused with one voice.

他们异口同声地拒绝了。

We all condemned him with one voice.

我们异口同声地谴责他。

Let us be united and speak with one voice.

让我们联合起来，用一个声音说话。