您要查找的是不是：
- LF-r開(kāi)（閉）集LF- open (closed) set
- 開(kāi)open
- 閉obstruct
- 開(kāi)關(guān)power switch
- 花開(kāi)bloom
- 合集union
- 開(kāi)票make out an invoice
- 分集diversity
- 自閉癥infantile autism
- 開(kāi)車(chē)to drive a car
- 集群colony
- 自閉self-imposed
- 開(kāi)店set up shop
- 集線(xiàn)器hub (network)
- 開(kāi)花abloom
- 閉鎖atresia
- 歌集songbook
- 開(kāi)門(mén)open (the) door
- 閉上shut
- 并集union of set
