[ dǎkai, dǎkāi ] 1.(揭开; 拉开; 解开) open; unfold 短语和例子 打开包袱 untie a bundle; 打开盖子 take off the lid; 打开铁锁链 break open the iron shackles; 打开降落伞 slip parachute2.(接通电路) turn on; switch on:打开收音机[电灯]turn on the radio [light] 3.(攻开) break through 短语和例子 打开一条出路 break through an encirclement or fight a way out4.(展开; 扩展) open up; spread 短语和例子 打开地图 spread out the map; 打开局面 open up a new prospect; 打开思路 broaden one's scope of mind; 打开眼界 widen one's horizon; 打开信号 opening signal