usually通常，频率比often高，很少有例外。uauslly go to bed at 10 p.m.
often强调动作经常性often late
wise 明智的，凭借经验有阅历而积累的智慧。a wise old man.
clever 机灵的，也有投机取巧之义，形容人或动物 a clever boy/monkey
smart指,精明的能干的，有思考的。work smart
shrewd精于盘算a shrewd businessman
work 体力或脑力劳动，go to work
job具体职业职位his job is a teacher
vocation理想的职业 true~
career生涯，事业 a teaching~
employment就业，强调雇佣~chance
industry行业 tourist ~
