屠龙之技tú lóng zhī jìthe art of butchering dragons—unpractical skill of great attainments; an art of a high order but of little value
❍ 及至学成～，不但无所用，且无可语者。(黄宗羲《叙陈言扬勾股述》) As he finished learning the refined art,he found that it was not only useless but there was nobody that he could talk to about it. 屠龙之技tú lónɡ zhī jì屠：宰杀。比喻虽然有很深的造诣但却不实用的技能。useless skill, a little value skill |