tuft: grass/ hair/ tree= bunch: grape

　　tumble vi. to fall suddenly and helplessly; to suffer a sudden downfall; to decline suddenly and sharply ( as in price): drop 突然跌倒

　　tumble: fall= swoop: move

　　uncalled-for adj. not called for or needed; unnecessary 不必要的，多余的；无缘无故的

　　对 required

　　verboten adj. forbidden; prohibited