不约而同

dà jiā duì cǐ dōu bù yuē ér tóng de jiā yǐ zǔ náo

大家对此都不约而同地加以阻挠。

Everybody just happened to try and block this.

tā yī jiǎng wán dà jiā bù yuē ér tóng dōu gǔ qǐ zhǎng lai

她一讲完，大家不约而同都鼓起掌来。

Spontaneous applause broke out as soon as she finished speaking.

cūn mín men bù yuē ér tóng de xuǎn jǔ tā dāng cūn zhǎng

村民们不约而同地选举他当村长。

As if by prior arrangement, the villagers unanimously elected him to be the village head.