time out of mind

1. He had not thought of that girl a single time since the day when she had conducted him to the Rue Plumet, he had not seen her again, and she had gone completely out of his mind.
   自从那天，这姑娘把他引到卜吕梅街以后，他一次也没有想到过她，也从来没有再见过她，他已经完全把她忘了。
2. "And at just the same time, the lion wakes out of his dream, and the first thing flashing into his mind is:" I must be able to catch up with the slowest antelope, otherwise I will starve to death.
   与此同时，狮子从他的睡梦中醒来，第一件事闪过他的大脑：“我一定要追上跑得最慢的羚羊快，要不然我就得饿死”。
3. By the time she fled past the closed door of the shop of the Lin family, she was completely out of her mind.
   待到她跑过那倒闭了的林家铺面时，她已经完全疯了！
4. That practice has been going on time out of mind.
   这种做法自古以来一直沿用。
5. The people of Yenan have lived in cave houses since time out of mind.
   延安人不知道从何时开始已住在窑洞里了。
6. At the same time, the paper pointed out the teaching characteristics of applying mind map to solve chemical ill-instructed problem.
   同时，得出了思维导图应用于化学劣构问题的教学特征。

noun

1. the distant past beyond memory

   Synonym:    time immemorial