speed-up
speed-up system speeder speedily speediness speeding speedo speedometer speedomiter speedster speedway speedwell speedy speer speiss spelaean spelaelogical spelaelogy spelaeology speleological speleologist speleology spelican spelicans spell spell-down spellbind spellbinder spellbinding spellbound |
speed-up /'spi:d,ʌp/
danh từ
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