英文關鍵字
adult
analysis
arboriculture
arborist
ash
autumn
biology
branches
caucasian
commission
curly
dieback
digital
disease
economical
environment
examination
exploring
foliage
forest
forester
forestry
fungi
glasses
hair
landscape
leaves
looking
male
man
nature
one
only
outdoors
person
profession
research
researching
student
studying
surgery
tablet
technology
tree
trees
university
working
young