That's hidden in the deep 深深隐藏的地方
that's hidden in the deep
它隐藏在深处
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Only 2.5% of the world's water is fresh and of that, 99% is frozen in icebergs or hidden deep underground.
UNESCO: Education
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