她是一位知名的环保主义者。
She is a well-known ___environmentalist.
作为一名环保主义者，他发起反对海洋塑料污染的运动。
As an ___environmentalist, he campaigns against plastic pollution in the oceans.
这位环境保护主义者发表了一场关于保护热带雨林的激情演讲。
The ___environmentalist gave a passionate speech about protecting the rainforest.
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