Lethe

基本解释

Looking like Lethe, see! the lake.
就像被遗忘，看啊！湖水。
Lethe means it is impossible to forget at all.
他的作品叫“遗忘”，只是表明他无法遗忘。
yy.blog.artron.net
As a close relative being far away, it raises more longing for and care, not lethe .
正如一位至亲的亲人远离我们，那会唤起我们更多的思念和关爱，而不是遗忘。

Standing in the Lethe of Milton's hell is none other than the classical figure, the figure from classical mythology, Medusa.
站在弥尔顿笔下的忘川河畔正是,那个源自神话的经典人物美杜莎。
耶鲁公开课 - 弥尔顿课程节选
One of these little details that Milton has lifted rather directly is that of the river Lethe, the river of oblivion that was believed to flow in the underworld.
其中弥尔顿直接盗用的一个小细节,是遗忘之河，即忘川,忘川被认为在地狱流淌。
耶鲁公开课 - 弥尔顿课程节选
It's a fantasy, of course, because no such brainwashing is going to be possible, just as the fallen angels - if you look at line 607 - will be barred from drinking their fill of the river Lethe, forgetfulness is impossible.
当然这是一次幻想，因为这种洗脑,根本就不可能实现，就如同那些堕落天使一般,如果看第607行7,他们被禁止喝忘川之水，遗忘是不可能的。
耶鲁公开课 - 弥尔顿课程节选

In Greek mythology drinking from the river Lethe erases memories of a past life.
FORBES: Oblivion in a Pill