They were a regular series of thumpings from the interior of the house , occasioned by the violent rocking of a cradle upon a stone floor , to which movement a feminine voice kept time by singing , in a vigorous gallopade , the favourite ditty of the spotted cow - 它们是从屋里面传出来的一连串有规律的砰砰声，原来是摇篮的猛烈摇动碰撞石头地面而发出的声音。随着摇篮的摇动，一个女声正用一种快速舞曲的一节奏唱。一首流行小调花斑母牛：
