n. an advocate of the doctrine that the world can be understood in scientific terms
n. a biologist knowledgeable about natural history (especially botany and zoology)
n. 自然主义者
1. A naturalist studies plants and animals in their natural environment.
一个自然主义者研究植物和动物在自然环境中的生活。
2. The naturalist observed the birds while hiking in the forest.
这位自然主义者在森林中徒步旅行时观察鸟类。
3. Many naturalists believe that protecting wildlife is essential for a healthy ecosystem.
许多自然主义者认为保护野生动物对健康生态系统至关重要。