early 15c., from Latin regressionem (nominative regressio) "a going back, a return," noun of action from past participle stem of regredi (see regress (n.)).
权威例句
1. This can cause regression in a pupil's learning process.
这可能会使学生在学习过程中退步。
2. The effect of colinearity is to make the regression coefficients unreliable.
共线性的影响是使回归系数不可靠.
3. Characteristic defects are of two main types; regression and syneresis.
特征缺陷主要有两类: 即退化和脱水收缩.
4. The spontaneous regression of established tumors is a rare.
长成的肿瘤自发地消退是罕见的.
5. The concepts of marine transgression and regression are considered to be fundamental.