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 wi...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.展开更多
文摘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.
