I. natural [ˈnætʃərəl] 形
单语范例（未经PONS编辑处理）
The magazine covered adventure travel, environmental issues, natural science, and other topics related to the outdoors.
en.wikipedia.org He was a doctor of medicine as well as philosophy he also studied natural science and mathematics.
en.wikipedia.org Here, he oversaw the local natural science museum, its herbarium and also worked on the museum's entomological collections.
en.wikipedia.org Functional analysis in behavior analysis employs principles derived from the natural science of behavior analysis to determine the reason, purpose or motivation for a behavior.
en.wikipedia.org His natural talents as an observer combined with an interest in natural science led him to study biology.
en.wikipedia.org