名词
中文翻译：主要活动
同义词：
['major activities', 'primary activities']
例句：
-
1. The school has a variety of principal activities to engage students in learning.
学校有各种各样的主要活动来吸引学生参与学习。
-
2. The company's main activities are focused on research and development.
该公司的主要活动是研究和开发。
-
3. The government is promoting several major activities aimed at improving the quality of life for itscitizens.
政府正在推广几项主要活动，旨在提高公民的生活质量。