City logistics is the process of totally optimizing urban logistics activities by considering the social, environmental, economic, financial and energy impacts of urban freight movement.
城市物流是在考虑社会、环境、经济、财政以及城市运输活动的能量影响的情况下，对城市物流活动整体进行优化的过程。
At that time, a vigorous environmental movement got going in the west. Later it developed into an urban conservation movement and became an important part of western social activism.
那时候西方就开始出现轰轰烈烈的民众环保运动，逐渐推广到老城的保护运动，成为西方社会运动的重要组成部分。
Social integration is an inevitable problem that migrant children have to face after the movement from rural to urban.
社会融入是流动儿童进城后所需要面对的不可避免的发展性问题。
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