preservationists
n.
（对野生动物、自然区、古迹和传统事物等的）保护主义者( preservationist的名词复数 );
例句:
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The house fell into disrepair but a group of preservationists have reconstructed the roofs.
这座房子年久失修，但一群古建筑保护者已翻盖了房顶。
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Preservationists were faced with a whole new set of problems.
来自WSJ
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Preservationists see it as a win for the city's architectural heritage.
来自WSJ
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But preservationists hope that Beijing's traditional structures remain more than a memory.
来自VOA