您要查找的是不是：
- LF-r开（闭）集LF- open (closed) set
- 开open
- LF-r开集LF-r open set
- 开关power switch
- 花开bloom
- 合集union
- 开票make out an invoice
- 分集diversity
- 开车to drive a car
- 集群colony
- 开店set up shop
- 集线器hub (network)
- 开花abloom
- 开门open (the) door
- 隔开to separate
- 开出burst into
- 开题报告opening speech; opening report
- 开本format
- 开发票invoice
- 开奖draw a lottery
