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加入词篮old
omit
on
once
one
oneself
ongoing
onion
online
only
onto
open
opener
opener
opening
opera
operate
operation
operation
operational
operator
opinion
opponent
opponent
opportunity
oppose
opposite
opposition
optical
optimistic
option
option
option
optional
optional
or
oral
oral
orange
orange
orbit
orchestra
order
order
order
orderly
ordinary
ore
organ
organ
organic
organisation
organise
organism
organization
organize
origin
origin
original
original
originality
ornament
other
otherwise
ouch
ought
ounce
our
ours
ourselves
out
outcome
outdoor
outdoors
outer
outlet
outlet
outline
outline
outlook
output
output
outset
outside
outsider
outsize
outstanding
outward
outwards
oval
oven
over
overall
overall
overcoat
overcome
overhead
overhead
overlook
