(每日一词）indelible

Indelible  /ɪnˈdel.ə.bəl/ adj. 洗不掉的；无法去除的; （记忆或行为）不可磨灭的，忘不掉的; 

Meaning: an indelible mark or substance is impossible to remove by washing or in any other way

meaning: indelible memories or actions are impossible to forget, or have a permanent influence or effect. 

前缀：in-否定

词根：del-删除（delete 删除, 键盘上的删除键）

后缀：-ible 形容词后缀

e.g. The blood had left an indelible mark on her shirt. 她衬衫上留下的血迹洗不掉。

e.g. I have an indelible memory of that meeting with Anastasia. 我永远忘不了那次与阿纳斯塔希亚的会面。