chiefly

mainly, chiefly, greatly, largely, mostly, primarily, principally, generally

这些副词均可表示“主要地、大量地”之意。
mainly: 指主要部分，突出在一系列事物中的相对重要性。
chiefly: 侧重某人或某物在众多的人或物中占主要和显著地位。
greatly: 通常强调程度的高。
largely: 着重范围或分量大大超过别的成分。
mostly: 强调数量占多半，近乎全部。
primarily: 侧重基本地，首要地。
principally: 侧重居首要地位。
generally: 通常强调普遍性。

副词 chiefly:

1. for the most part
   同义词：principally, primarily, mainly, in the main

1. The Government is chiefly concerned with controlling inflation.
   政府的当务之急是控制通货膨胀。
2. Air consists chiefly of nitrogen.
   空气主要由氮气组成。
3. Cattle feed chiefly on grass.
   牛主要以草为食。
4. The government's revenue is made up chiefly of the money we pay in taxes.
   政府的收入主要来源是靠我们所交的税。
5. Romanian-born sculptor who settled in Paris in1904. He broke sharply with the realist tradition, making abstract sculptures, chiefly in metal and stone, of great geometric simplicity.
   布兰诺西，康斯坦丁1876－1957罗马尼亚裔雕刻家，于1904年定居于巴黎。他鲜明地打破现实主义传统，主要用金属和石头为材料创作了极简单明快的几何造型的抽象雕塑
6. Chiefly, I asked you to remember to write to your dear mother.
   我主要是想提醒你写信给你母亲。
7. Bread is chiefly made of flour.
   面包主要是由面粉做成的。

chief.ly

adv.（副词）
Above all; especially.
首先；尤其
Almost entirely; mainly.
绝大部分；主要地
adj.（形容词）
Of or relating to a chief:
首领的，领袖的：首领的或与首领有关的：
例句：
chiefly responsibilities.
领袖的责任