1. Another key feature of these grand-scale construction projects which must not be overlooked is their geographic centralization. 大建设计画中还有一点不可忽略的重要特徵，即这些工程在地理上的「集中化」。
2. First, the author assumes that centralization would improve profitability by cutting costs and streamlining supervision of employees. 首先，作者认为集权能够通过削减成本和简化员工管理来提高赢利能力。
3. Sometimes a small hut was set up for the afflicted person either near the home or the river to aid in the families centralization of home health care. 有时候，要么是在家的附近，要么是在河的附近，建立起一座小棚屋，专门提供给饱受病魔折磨的人使用，有助于家人集中起来进行护理。
英英解释
n.
1. the act of consolidating power under a central control
2. gathering to a center
