美國(guó)是當(dāng)前世界上最發(fā)達(dá)的國(guó)家用英語(yǔ)怎么說(shuō)2，發(fā)展中國(guó)家和發(fā)達(dá)國(guó)家用英文怎么說(shuō)1，美國(guó)是當(dāng)前世界上最發(fā)達(dá)的國(guó)家用英語(yǔ)怎么說(shuō)Americanis(the)bestdevelopedcountryintheworldTheUnitedStatesiscurrentlythemostdevelopedcountryintheworldtheunitedstatesisthemostdevelopedcountryineconomyaroundtheworld.2，發(fā)展中國(guó)家和發(fā)達(dá)國(guó)家用英文怎么說(shuō)發(fā)展中國(guó)家de...