origin-destination study

例句：

1. 1. This study aims toinvestigate the impact of climate change on theorigin-destination patterns of international migration.
   这项研究旨在探究气候变化对国际移民的出发地和目的地模式的影响。
2. 2. The researchersconducted a comprehensive origin-destination studyto understand the factors that influence people's travel choices.
   研究人员进行了一项全面的出发地和目的地研究，以了解影响人们旅行选择的因素。
3. 3. The study revealed that theorigin-destination pattern is closely relatedto the economic development level and cultural differencesbetween countries.
   该研究表明，出发地和目的地模式与各国经济发展水平和文化差异密切相关。