once的近义词/同义词有哪些
once的近义词/同义词有：occasion, time, one, again, only, on, single, never, aforetime, ago, previously, time, past, at, long, the, heretofore, one, in, fluke, by, at, time, ever, a, single, chance, any, single, only, occasion, time, one, formerly, ago。
adv.
once的近义词（一度,一次）：occasion, time, one, again, only, on, single, never。
once的近义词（从前地）：aforetime, ago, previously, time, past, at, long, the, heretofore, one, in。
once的近义词（曾经,一度）：fluke, by, at, time, ever, a, single, chance, any。
n.
once的近义词（一次）：single, only, occasion, time, one。
once的近义词（其他释义）：formerly, ago。