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.

它需要习不用事先准备，张嘴就说的见习。它不需要刻苦钻研，在那些愚笨的就不具备这种本领；它是信手拈的，对周围的切洞若观火。