这一政策旨在维护和平。 The aim of the policy is the preservation of peace.
四维的，四度空间的由四维确定或表现的，尤指三个空间维度和相对理论中的时间维度 Specified by or exhibiting four dimensions, especially the three spatial dimensions and single temporal dimension of the relativity theory.
为了维持身体健康，一个人应该吃有益健康的食品，并经常锻炼身体。 In order to maintain physical well being, a person should eat wholesome food and get sufficient exercise.
维护公共秩序是警察的职责。 It's the duty of the police to preserve the public order.
