副词
1. Chiefly, I ask you to remember to write to your elderly mother.
首先，我要你记住给你年老的母亲去信。
2. Bread is chiefly made of flour.
面包主要是由面粉制成的。
3. The land was used chiefly for pasture.
这土地多半用作牧场。
4. Their worries were chiefly about money.
他们尤为金钱发愁。
1. 首要：chiefdom 首领的地位 | chiefly 首要 | chiefship 首领的地位
2. 主要的：├mostly大多数的 | ├chiefly主要的 | └largely很大程度上
3. 多半地：chief 领袖 | chiefly 多半地 | child 小孩
4. 首要地,主要地：50.moreover而且,此外; | 51.chiefly首要地,主要地; | 52. emormously非常地,巨大地;
1. 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.
e.g. He joined the consular service, chiefly because this was one of the few job vacancies...
他到领事馆工作，主要因为那是仅有的几个空缺职位之一。
e.g. His response to attacks on his work was chiefly bewilderment.
听到别人对自己工作的指责，他的反应主要是困惑。
adv
1. for the most part
e.g. he is mainly interested in butterflies