●ˈact on sth ( ˈact upon sthmore formal) 1.to do sth as a result of advice, information, instructions, etc. that you have received遵照…行事;根据…办理◆The police were acting on information from a member of the public. 警方根据一名群众的举报采取了行动。◆I was just acting on instructions. 我不过是奉命行事而已。◆If my advice had been acted upon, this would never have happened. 当初要是听从我的建议,绝对不会发生这种事情。OBJadvice, information, instructions2.to have an effect on sth影响;作用于◆The drug acts on the central nervous system. 这药会对中枢神经系统产生影响。[v + prep]