出国留学网托福栏目为大家带来了《快速攻读托福阅读的必备词汇》，我们栏目会持续关注托福考试信息动态，希望大家能够考出好成绩! enroll to one = combine complement = supplement = add to substitute = replace so far = until present = up to now rooted in = based on make their way = travel vulnerable--open to bre...