京晶：那还是低估了，建造巴黎圣母院花了一百多年，就算用如今的工业技术，也是不能一蹴而就的。
It took 100 years to build Notre Dame . With today 's technology , it still can 't be rushed .
医学院的学生花他们前面一两年在课堂研究。
Medical students spend their first two years in classroom study .
院花