文档介绍：decade=ten years
a fortnight=two weeks=half a month
ask for=request
approximately=about
be considered=be regarded
breed= species
compose=write
certain number=limited number
climate=weather
cross=go over=walk through
conclusion=result
plicated
complete=finish
demography=population study
deadline=date of expiry
divide=separate
extinct=die out
embark upon=start
entrance=access
expensive=costly
individual=personal
inform=warn
lack of=fewer
landlord=owner
large=massive
persuade=convince
per person= a head
pharmacy=drugstore
prepare=draw up
practically=almost
primary education=elementary
request=ask for
rest of= other parts of
refreshments=snacks and drinks
research studies=investigations
sea=marine
send=mail out
seminar=workshop
set up=establish
kin=appearance 
summer vacation=break
sizeable=large number of 
site=place=venue=whereabouts=location
tame=boring  
ten decades=a century 
ten centuries=a millennium 
tent=marquee 
tertiary education=further education=higher education 
twice=double 
wild animals=beasts 
a quarter=25%=1/4=3 months=a season= 15 minutes 
advantage=merit=good/strong point=benefit=virtue=positive aspect 
disadvantage=demerit=weak point=flaw=drawback=ing=negati