Demography also includes the study of non-living objects like light bulbs and taxi cabs and buildings because these are also populations.

人口统计学还包括对非生物物体的研究，如灯泡、出租车和建筑物，因为这些也属于种群。

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"I - like every other taxi driver in Sofia - stop at a green light to make sure nothing is coming the other way," he said.

“像索非亚的其他出租车司机一样，我会在每个绿灯亮起后停在哪里，确认其他车道上没有什么东西冲过来之后才会驶过路口”，他说。

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TRAFFIC is light on the bridge linking Ciudad Hidalgo in Mexico to Tecún Umán in Guatemala. Tricycle-taxi drivers and an armed guard idly stand around in the sun.

连接墨西哥Ciudad Hidalgo至危地马拉Tecún Umán的桥梁上交通顺畅，出租三轮车司机和一名武装警卫闲站在太阳下。

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As the taxi stopped for a red light Paul noticed a flower shop.

VOA: special.2009.04.11

The taxi had been stopped at a light with a passenger in the back when the suspect allegedly entered the front seat and struck the driver in the face, the official said.

WSJ: A Suspected 'Taxijacking' Ends in N.J.