单词：alpine ecosystem
alpine ecosystem的用法和样例：
例句
- The Mauna Kea summit is a conservation district because it is a fragile and unique alpine ecosystem that serves as a major source of water for the entire island of Hawaii.茂纳凯亚峰是脆弱又独特的高山生态系统，并且是整个夏威夷岛的主要水源，因此被列为生态保区。
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