one dog barks at a shadow and the pack barks at the noise—chime in (/echo/parrot/follow others) blindly;one barking dog sets all the street a-barking;slavishly echo others
? 突然，一位官員對他發(fā)動了人身攻擊，一伙無恥文人，～，跟著叫囂起來。Suddenly an official launched personal attacks on him with a batch of shameless scholars raving all at once.It was just like one dog barking at a shadow and the pack joining it.
吠形吠聲形（影）fèi xínɡ fèi shēnɡ
吠：狗叫。一只狗看見人就叫，很多狗聽到了叫聲也跟著叫。比喻隨聲附和，沒有主見。slavishly echo others, chime in blindly, echo blindly, blindly follow others