根据 “运输与通行便利化”项目的项目准备研究，中非是非洲大陆运输成本最高的地区之一。

Transportation costs in central Africa are among the highest on the continent, according to research done in preparation for the Transport and Transit Facilitation project as it is called.

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在主题被确定之后，小组准备开始他们项目的研究阶段了。

After topics are defined, teams are ready to begin the research phase of their project.

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在主题被确定之后，小组准备开始他们项目的研究阶段了。

After topics are defined, teams are ready to begin the research phase of their project.

youdao