prin·ci·pal·ly
adverb/ˈprɪnsəpli/
/ˈprɪnsəpli/
- mainly
主要地 - The book is aimed principally at beginners.
这本书主要是为初学者编写的。 - No new power stations have been built, principally because of the cost.
没有新建的发电站，主要是因为经费问题。
Extra Examples- The farms are principally arable.
这些农场主要是可耕地。 - Change management is principally concerned with people, their attitudes and skills.
变革管理主要关注人、他们的态度和技能。 - The measures were principally designed to tackle the problem of homelessness.
这些措施主要是为了解决无家可归问题。 - The sportswear range is aimed principally at the skiing market.
运动服系列主要针对滑雪市场。 - The tax was very unpopular, principally because it hit the poor hardest.
这项税收很不得人心，主要是因为它对穷人的打击最沉重。
Oxford Collocations DictionaryPrincipally is used with these adjectives:- concerned
- responsible
- aim
- consist
- …
- The book is aimed principally at beginners.