词汇	unguis excavatus
释义	unguis excavatus 陷凹甲
随便看	mass conductivity coefficient mass conerete mass conmmunication mass consciousness mass conservation mass conservation equation mass-conservation equation mass conservation factor mass conservation law mass consistency mass construction mass consumer culture Mass consumer in high-end market mass consumption mass consumption society mass contagion mass contest mass contingency events mass control mass control cutting mass-controlled dynamic loudspeaker mass-controlled oscillator mass-controlled system mass controller mass convergence