principalia

例句：

1. 1.The main reason for the company'sfailure was its poor management.
   公司失败的主要原因是由于管理不善。
2. 2. The main goal of the projectis to improve efficiency.
   项目的主要目标是提高效率。
3. 3. Themain focus of the meeting was on thebudget.
   会议的主要焦点是预算。