"economy of effort"
"the Scots are famous for their economy"
"it was a small economy to walk to work every day" "there was a saving of 50 cents"
economy是什么意思
ecophobia是什么意思
ecophysiology是什么意思
ecosoc是什么意思
ecospecies是什么意思
ecospecific是什么意思
ecospecifically是什么意思
ecosphere是什么意思
ecosystem是什么意思
ecotage是什么意思