词汇	踏硬
释义	踏硬 tà yìng谓用脚踩踏硬弩而发箭。
随便看	principal caregiver principal carrier principal cartridge principal cause Principal cause principal cause of crime principalc direction of curvature principal cell principal cell, light cell principal cells principal center of curvature principal centers of curvature principal centre of curvature principal chain principal chain-homotopy principal challenge principal channel principal component regression method Principal component regression model Principal Component Regressive Analysis principal character principal character extraction principal characteristic Principal characteristics principal charge