1. Ekistics is the science of human settlements and the study of their planning and design.
城市规划学是关于人类定居地的科学，以及它们的规划和设计的研究。
2. The principles of ekistics aim to create well-functioning and sustainable urban environments.
城市规划学的原则旨在创造功能良好和可持续发展的城市环境。