单词	double-concave
释义	double-concave 两面凹;双凹
随便看	step-back step back step back in time step back method step-back method step-back method of welding step back relay step-back relay stepbacks step backward step back welding step-back welding stepbairn stepbairns step bar step bar test step bar test piece step-bar test piece step bearing step bearing bracket stepblender step block step-block step board stepboard 袅袅水芝红袅袅秋风生袅袅穿云衢袅袅青栎道袖剑飞吟袖剑飞吟袖手何妨闲处看袖染花梢露袖纱寒袖长管催欲轻举こうろんおつばく【甲論乙駁】こうわこうわこうわこうわこうわ【口話】こうわ【講和】こうわ【講話】こうわ【高話】こうわん