13. st=sist=stat=stin=stem 站,立(6)
exist
existent
nonexistent
existential
existentialist
existentialism
existence
nonexistence
existed
existing
pre-existing
coexist
coexistent
coexistence
coexisting
preexist
preexistent
preexistence
steel
steely
steeliness
合成词
steelhead
steelworker
steelmaker
steelwork
steel-gray
steel-blue
steel-toed
steel-eyed
steel-rimmed
steel-framed
steel-and-glass
station
stationery
stationer
stationing
stationary
geostationary
molestation
chlid-molestation
stationmaster
stationhouse
superstation
gas-station
space-station
distant
distance
distancing
distance-learning
short-distance
long-distance
middle-distance
合成词
distant-water
far-distant
not-too-distant
not-so-distant
distantly
distal
distally