One of their main materials is Lutindzi grass, which grows only in mountain areas.

VOA: special.2009.05.04

His main research interests are in the areas of comparative political economy with the focus on the developing countries.

他主要的研究领域在于,对比性政治经济,特别是发展中国家的政治经济。

普林斯顿公开课 - 国际座谈会课程节选

We have several areas we call the Green, Lincoln Field, or the Main Green.

我们有许多不同的校区，包括格林区、林肯场区或者梅因格林区。

布朗的学生们 - SpeakingMax英语口语达人