unlearnun•learn /ˌʌn'lɜːn/

vt 非正式 使有意忘掉(学过的东西)；摒弃(习惯、谬见等)

• You must unlearn the habit of smoking first of all. 你得首先改掉抽烟的习惯。

• Try to unlearn the faulty techniques you have learned before. 设法忘记先前学过的那些靠不住的技术。