Because of the plant and animal life, scientists and conservationists have studied the area for many years.

由于动植物的存在，科学家和环保人士对该地区进行了多年的研究。

Water is considered a major necessity for life. Scientists want to study whether Ceres was ever home to microbial life.

水被认为是生命的重要必需品。科学家们想研究谷神星是否曾经有过微生物生命。

" That's a pretty small percentage, " says Nathan Schaefer, a biologist, or life scientist, at the University of California, and a leader of the research.

加州大学的生物学家、生命学家兼这项研究的首席作者内森·谢弗表示，" 这个比例相当的小。"