It has served an extemporary apprenticeship; it wants no drilling; it never ranks in the awkward squad; it has no left hand, no deaf ear, no blind side.

要一个练习用事先准，张嘴就说的见习。要刻苦钻研，在那些愚笨的人从来就这种本领；是信手拈来的，对周围的一切洞若观火。