短语词组短语a speck of dirt 一粒污点;一丝灰尘;一点尘土a speck of food 少量食物not a speck of 一点也没有a speck of dust 一粒灰尘;一点灰尘a speck of paint 一点颜料;一点油漆a speck of dust detail 一点灰尘 返回 a speck of