He was asked to arbitrate (a serious dispute) between management and the unions.
He was asked to arbitrate (a serious dispute) between management and the unions.
他被邀请在资方与工会之间（对一严重争端）作出仲裁.
He was asked to arbitrate (a serious dispute) between management and the unions.
他被邀请在资方与工会之间（对一严重争端）作出仲裁.