Tours are organised by theme, such as architecture, historical periods, ethnicity, music, art and neighborhoods.
这份观光指南是分主题陈述的，包含建筑，不同的历史时期，种族，音乐，艺术以及社区。
The authors note they controlled for how long the participants had been shopping, and for several demographic categories such as age, race, ethnicity and gender.
作者们还指出，他们控制了参加者的购物时长、以及一些人口统计数据，比如年龄、种族、民族和性别。
Adibi added that many factors are different in New York city and Krakow - such as diet, lifestyle, ethnicity and other contaminants.
阿迪比补充到纽约和克拉科夫之间许多因素存在不同如饮食，生活习惯，种族划分和其他污染。
Their future marred by conflicts over religion, ethnicity, and resources such as water, land, and oil, these two girls present an island of hope in the desolate landscape of Sudan.
图中的两个女孩仿佛是苏丹荒凉的大地上升起的希望之岛，但发生在这里的宗教与种族引起的冲突以及对水源，土地，石油等资源的争夺已经使得她们的未来伤痕累累。
Analyze and describe demographic distributions, such as gender, ethnicity, age, and education levels.
分析和描述人口分布，如性别，种族，年龄和教育水平。
Analyze and describe demographic distributions, such as gender, ethnicity, age, and education levels.
分析和描述人口分布，如性别，种族，年龄和教育水平。
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