ADV [ADVERB with verb]主要地;最重要地 You use chiefly to indicate that a particular reason, emotion, method, or feature is the main or most important one. 主要地;最重要地
He joined the consular service, chiefly because this was one of the few job vacancies.
他到領事館工作,主要因爲那是僅有的幾個空缺職位之一。
His response to attacks on his work was chiefly bewilderment.