单词	vertex of pencil
释义	vertex of pencil 线束的顶
随便看	quasi-legal quasi-legislative quasi legislative quasi-legislative act quasi-legislative action quasi-legislative powers quasi-length quasi-levelling quasi-likelihood quasi-limited existential quantifier quasi-limited univerasl quantifier quasi-linear quasilinear quasi-linear amplifier quasi linear approximation quasi-linear characteristics quasilinear characteristics quasilinear differential equation quasi-linear elasticity quasilinear elliptic equation quasi-linear elliptic equation quasilinear equation quasi linear equation quasi-linear equation quasi-linear estimator 磥磦磧磨磨1 磨2 磨3 磨4 磨不磷，涅不缁磨刀不误砍柴工耽搁耽溺耽误耽酒耿耿介耿直耿耿耿饼聂