您要查找的是不是:
- θ-开L-集θ-L open set
- 准半开L-集pre-semiopen L-sets
- 开open
- γ-开L-集γ-open L-sets
- δ-开L-集δ-open L-sets
- 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
- 歌集songbook
- 开门open (the) door
- 并集union of set
- 隔开to separate
- 群集throng