The discovery of the cowpox vaccination let the danger of vaccination more less, and cost lest.牛痘术的发明使种痘的危险性更小, 花费也降到最低,故而很快在全世界推广开来.In nineteen century, Enligh doctor Pearson came to Macao to spread the cowpox vaccinati...
Professors, for the most part, are firmly committed to teaching, not research.大多数教授都投身于教学，而不是研究。For the most part the Germans kept out of local disputes.德国人通常不卷入地区冲突。The students are, for the most part, from the villages...