adv.主要地,大部分;
例句:
This excuse, though true in part, was principally a fetch.
这句借口虽然部分是真实的, 但主要的是另有计谋.
The sell-off is aimed at repositioning the company as a publisher principally of business information.
出售公司部分业务的目的是将公司重新定位为以商业信息类出版物为主的出版商。
This is principally because the major export markets are slowing.
这主要是因为主要出口市场发展缓慢。