蒲柳púliǔ水杨,是秋天很早就凋零的树木;旧时用来谦称自己体质衰弱或地位低下{big catkin willow; tree of the genus Salix that defoliates in early autumn; (in old times) modest expression formerly meaning oneself is weak or low in status}: ～之姿{weak in nature}|～庸材。{mediocre; lacking ability}