也许我们可以更加建设性地利用时间来研究那些的确幸存下来的珊瑚，比如那些在被称为“残遗种保护区”的地方。
Perhaps some more constructive use of our time could be spent at researching corals that do survive, like in areas known as refugia.
热带成分的构成和分布反映古热带和古地中海区系的残遗性影响；
The composition and altitudinal distribution of the tropical elements indicate the remnant effects of the Paleotropical and Paleo-Mediterranean flora;
绝大多数广西特有杜鹃花种类分布的生境条件十分恶劣，这间接说明了广西特有杜鹃花多是一些古老的残遗种；
The ecotype conditions of Rhododendron distribution are inferior. It show that most endemic species of Rhododendron in Guangxi are antiquated survival;
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