原子弹 yuánzǐdàn atomic bomb Definitions Defs Origin Strokes Stroke Words Sentences Sents 原子 yuánzǐ noun atom atom; atomic; the smallest unit of a chemical element, consisting of a nucleus surrounded by electrons弹 彈 dàn noun bullet bullet; ball; shell; bomb; (bound form) small pellet used as a projectile from a catapult or slingshot
