待车队驶出广州市区，我们很快就进入了广东的农村地区。
As our caravan exited the suburbs of Guangzhou we soon entered rural Guangdong.
随后利用此方法对广州市区大气中的羰基化合物进行了研究。
Then, the same method was used to study the concentrations of carbonyl compounds in the atmosphere in Guangzhou.
第二天，我们忙完了当天的工作后，就从佛山转到了广州市区住了下来。
In the second night, we switched to settle in the downtown of Guangzhou, after we finished our daily task.
前言：目的：探讨影响广州市区更年期妇女保健态度、知识、行为的相关因素。
Objective: to discuss the factors of affecting the health care attitude, knowledge and behavior of women in menopause.
前言：目的：探讨影响广州市区更年期妇女保健态度、知识、行为的相关因素。
Objective: We want to learn the factors that affect the attitude, knowledge and behavior of menopause women health care.
结果表明在广州市区范围内，不同的时间不同的采样地点羰基化合物的浓度变化不大。
The results showed that the concentrations had no pronounced changes between different sampling sites and times in the districts of Guangzhou.
目的：大气中SO2污染会对人体健康带来潜在的危害，因此有必要了解广州市区SO 2污染与人群暴露水平。
Objective: As there is a potential health impact of SO 2 pollution on human body, it is important to understand the characteristics of population exposure to SO 2 in the urban area of Guangzhou.
采用灰色系统理论的预测方法，以1999～2004年广州市的房地产产值为基础数据，建立了广州市房地产产值预测模型，并在此基础上对广州市区未来的房地产产值进行了预测。
The paper uses the forecasting method of grey system theory and builds the forecasting model of real estate production value of Guangzhou city based on the data from 1999 to 2004.
采用灰色系统理论的预测方法，以1999～2004年广州市的房地产产值为基础数据，建立了广州市房地产产值预测模型，并在此基础上对广州市区未来的房地产产值进行了预测。
The paper uses the forecasting method of grey system theory and builds the forecasting model of real estate production value of Guangzhou city based on the data from 1999 to 2004.
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