回复: 如何在线使用语料库
感激涕零啊! 呵呵:)
This sentence: Athlets in high-impact sports such as running may also lose iron through a phenomenon where samll blood vessels in he feet leak blood.(from 新视野大学英语3, unit 2, section A, 第32句).
Here phenomenon is followed by 'where' instead of 'which' or 'that'. I...