point of reference
noun/ˌpɔɪnt əv ˈrefrəns/
/ˌpɔɪnt əv ˈrefrəns/
(plural points of reference)
- something that you already know that helps you understand a situation or explain something to somebody
参照物；参考依据 - Unemployment serves as a useful point of reference in examining social problems.
失业情况是研究社会问题的有效参照。
- Unemployment serves as a useful point of reference in examining social problems.