摘要
Since the half-way mark of the century, theUnited. States has gone through periods of tre-mendous national ferment: political and socialupheavals, economic adjustments, technologicalinnovations. These have produced widespreadchanges -- changes that have been reflected andoften paralleled in the American language aswell.
出处
《外语教学与研究》
1980年第2期30-34,共5页
Foreign Language Teaching and Research
