opening upn.开发；开辟；开放openingn.开口；开始；张开；开幕；空缺adj.开头的动词open的现在分词.opening on comer角部开孔opening for feed[化] 进料口opening ceremony开幕式openingeducating开放教育opening movement张口运动； 张开(口)运动opening accounts初期帐户opening porosity开孔率opening character开启特性opening exercises开幕仪式opening of tender开标