I had not know him for 20 years without learning that he always kept in upper-left pocket of his waistcoat the little book in which he put down his engagement?

我认识他都20多年了，还不知道他总把那个用于纪录他当年订婚情况的小本子放在外套的左上方的口袋里面。

youdao

Intuition is not subliminal perception; it is subtle perception and learning-knowing without knowing that you know.

直觉并非下意识的感知，它是精细微妙的感知与学习，是在不知不觉中明白你如何明白的关键。

youdao

If you just start with the issue of discipline, we know that without a certain amount of discipline and order in the classroom, it's impossible for learning to occur.

BBC: News | Monitoring | President Clinton on Shanghai radio phone-in