This photo essay highlights some of the key health issues related to urbanization and five WHO-recommended, calls to action to build a healthy and safe urban environment.
本照片故事阐述与城市化有关的主要卫生问题以及世卫组织为创建安全可靠和有益健康的城市环境提出的五项行动建议。
Doing so is highly recommended in general, but mandatory for at least the first essay.
一般而言，我极力建议这样做，但至少第一份是强制性的。
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