They ran together, their legs moving in unison.

他们步调一地一起跑。

The bodybuilders contracted their biceps in unison.

健美运员们一起收缩肱二头肌。

The governments acted in unison to combat terrorism.

这些国家的政府一对付恐怖主义。

I am pleased to report that the various committees are now working in unison to thoroughly investigate this matter.

我很高兴地告诉大家，各委员会正在一，彻底调查这件事。