atom n. 1.原子。 2.微粒;微量。 chemical atoms 原子。 physical atoms 分子。 have [there is] not an atom of 一点也没有。 break to atoms 粉碎 (The vase was broken to atoms. 花瓶敲得粉碎)。
a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239) 同义词:atomic bomb, A-bomb, fission bomb, plutonium bomb,