r for the most part
adv. 主要地, 大抵
1. She mainly studies biology at university.
她在大学主要学习生物学。
2. The team mainly focuses on improving customer service.
这个团队主要专注于改善客户服务。
3. We eat mainly vegetables and fruits for a healthy diet.
我们主要吃蔬菜和水果来保持健康饮食。