dwell principally主要居住
fall principally主要地减少
principally target主要目标
stress principally主要强调
Principally India主要印度
Principally Involved主要作用
Is Principally韦茅
aim principally主要地打算
principally ad大体上
ADV（副词） Principally means more than anything else. 最主要地 [ADV with cl/group]
This is principally because the major export markets are slowing.
这最主要是因为主要出口市场越来越不景气。