原因 /yuányīn/ angolul

causation [causations]▼(act of causing)
noun
[UK: kɔː.ˈzeɪʃ.n̩] [US: ˌkɒ.ˈzeɪʃ.n̩]

cause [causes]▼(source or reason of an event or action)
noun
[UK: kɔːz] [US: ˈkəz]

reason [reasons]▼(that which causes: a cause)
noun
[UK: ˈriː.zən] [US: ˈriː.zən]