您要查找的是不是：
- LF-r开（闭）集LF- open (closed) set
- 开open
- 闭obstruct
- 开关power switch
- 花开bloom
- 合集union
- 开票make out an invoice
- 分集diversity
- 自闭症infantile autism
- 开车to drive a car
- 集群colony
- 自闭self-imposed
- 开店set up shop
- 集线器hub (network)
- 开花abloom
- 闭锁atresia
- 歌集songbook
- 开门open (the) door
- 闭上shut
- 并集union of set
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