permanent和constant的区别

前者强调永久性，一劳永逸的意思，比如永久居留permanent residence后者强调一贯性，有持续发生一件事情的意思[例句]She suggests that women are under constant pressure to be abnormally thin她暗示说女性总是处在保持身材异常瘦削的压力之下。