英文關鍵字
activist
biology
bottles
care
change
charity
childhood
children
clean
cleaning
conservation
earth
eco
ecologist
ecology
ecosystem
embracing
environment
environmentalism
environmentalist
girl
green
help
horizontal
hug
hugging
kids
knees
lawn
leisure
lifestyle
moral
nature
outdoors
park
planet
saving
spring
summer
video
voluntary
volunteering
volunteerism
volunteers