n.掷回；挫折；阻止；大倒退 变形： 复数：throwbacks 英英释义： throwback[ 'θrəubæk ]n.an organism that has the characteristics of a more primitive type of that organism同义词：atavista reappearance of an earlier characteristic同义词：atavismreversionadj.characteristic of an atavist同义词：a