不约而同

As Keith approached the finishing line, the crowd rose to their feet as one man, cheering him on.

基思快到达终点的时候，人们不约而站起来为他加油。

Local people were keen for appreciating Su Dongpo for doing this thing, they realized that he liked to eat bouilli, then unanimously sent pork to him at Spring Festival.

当老百姓感激苏东坡办件好事，听说他喜欢吃红肉，到春节，都不约而他送去猪肉表示心意。