well defined
adjective uk/ˌwel dɪˈfaɪnd/ us/ˌwel dɪˈfaɪnd/
表述清楚的;明确的
clearly expressed, explained, or described
[ before noun ] We were not expecting Mr Levy to give us a clear or well-defined answer. 我们并不指望利维先生会给我们一个明确的回答。
[ before noun ] Scientists follow several well-defined steps in investigating unexpected outbreaks of disease. 科学家们在研究疾病的突发情况时都会遵循几个明确的步骤。