主要部分

例句：

1. 1. The main goal of the project is to reduce carbon emissions.
   这个项目的主要目标是减少碳排放。
2. 2. The main reason for his absence was a sudden illness.
   他缺席的主要原因是一个突发的疾病。
3. 3. The main focus of the meeting was on discussing the budget.
   会议的主要焦点是讨论预算。