open
【释义】： adj．开的v．打开，散开 ◇open an attack开始进攻open and shut一目了然open defence扩大防守open fire开火open out显示open up打开 ‖open air户外，露天open ammunition space露天弹药库open berth开放锚位open city不设防之城市open cockpit敞式座舱open column疏开纵队open fuse裸装引信open mess军官俱乐部opening［′oupeni］n．开始，通路，孔opening acceleration开伞加速度opening velocity断开速度 |