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英文關鍵字
nature
detail
abstract
energy
natural
raw
cutting
wooden
pattern
industrial
power
technology
cut
concept
house
industry
tool
wood
fuel
material
textured
hardwood
timber
lumber
plank
production
in
hard
alternative
process
poured
boiler
bio
breaker
sawmill
processing
preparing
a
chips
biomass
escalator
biofuel