那家餐厅因为对老年顾客实行歧视性定价而受到批评。

The restaurant was criticized for its discriminatory pricing policy towards elderly customers.

discriminatory 是形容词，来自动词 discriminate（区别对待、歧视）。discriminate 由前缀 dis-（表示"分开"）和词根 crimin（来自拉丁语 crimen，意为"区分、判断"）组成，加上动词后缀 -ate。discriminatory 表示"有歧视性的、区别对待的"，通常带有负面含义，指不公平的区别对待。