smog
加入词篮exhaust
fume
waste
ethnic
tribe
native
evolution
evolve
primitive
civilize
civilization
civilization
culture
decent
respect
savage
fierce
spear
bow
arrow
stick
origin
original
originate
source
cradle
tradition
convention
conventional
usage
antique
conceal
dig
remnant
remains
ruin
sacrifice
linguistic
language
idiom
dialect
accent
oral
jargon
pronounce
pronunciation
articulate
vowel
phone
accent
stress
word
alphabet
initial
spelling
spell
vocabulary
stem
root
meaning
dictionary
cognitive
recognize
recognition
identify
identification
compound
context
outline
philosophy
philosopher
material
texture
ingredient
stuff
thing
ideal
stereotype
phenomenon
essence
element
attribute
essential
mostly
fundamental
basic
basement
nature
basis
infrastructure
substance
substantial
entity
form
