英文關鍵字
alphabet
book
close
closeup
definition
dictionary
eco
ecology
education
english
environment
environmental
explanation
foreign
garbage
glossary
grammar
information
interpretation
knowledge
language
learn
linguistics
macro
meaning
page
paper
plastic
pointing
pollution
pronunciation
recycle
recycling
reduce
research
reuse
save
science
student
study
teacher
terminology
text
transcription
trash
up
vocabulary
waste
word