英语语法分析

They are vital for sustaining life in some of the driest parts of the world.

它们对于在世界上一些最干旱的地区维持生命至关重要。

Ardent supporters of public higher education know the importance of sustaining private higher education.

热心支持公立高等教育的人知道维持私立高等教育的重要性。

For all its success, the United States remains deeply hesitant about sustaining the research-university model.

尽管取得了成功，美国仍然对维持研究型大学的模式犹豫不决。