Translation Writing A generation ago,Jonaitis would have been a rarityl in college.Today,the U.S.Department of Education estimates,about 6 million people aged 25 or older are studying in American institutions of higher learning,and more than 300 centers for adult learning have sprung up2 at colleges. Notes: rarity:sth.that is unusual or does not happen often 的事或物品 spring up:suddenly appear or start to exist涌现 e.g.Fast-food restaurants are springing up all over town.A generation ago, Jonaitis would have been a rarity1 in college. Today, the U.S. Department of Education estimates, about 6 million people aged 25 or older are studying in American institutions of higher learning, and more than 300 centers for adult learning have sprung up2 at colleges. Notes: rarity: sth. that is unusual or does not happen often 罕见 的事或物品 spring up: suddenly appear or start to exist 涌现 e.g. Fast-food restaurants are springing up all over town