We must keep these lessons of history deep in mind .

这种深刻的教训应该为后人所吸取。

youdao

The doubt was still there, in the deep recesses of her mind.

在她的内心深处依然存有疑虑。

《牛津词典》

As Alan Arnette, a mountain climber from America, said "Climbing mountains drives you to look deep inside yourself, and lets you find out whether you are healthy enough and strong enough in mind when you want to stop."

正如美国登山家阿兰·阿奈特所说：“爬山会让你审视自己的内心深处，当你想停下来的时候，你会发现自己的内心是否足够健康和强大。”

youdao

I think I would derive more pleasure from being able to branch out in my own mind sort of considering more deep pleasures, more deep thoughts.

我认为那样才更快乐,即开拓自己的思维,思索更深层次的快乐和想法。

耶鲁公开课 - 公正课程节选

Such where the deep transported mind may soar Above the wheeling poles, and at Heav'n's door Look in, and see each blissful Deity Now the graver subject that Milton is intending at some point to expound upon is clearly an epic one.

埋藏于心底的思想会,冲天而上并到达上帝的门前,往里一瞥你会看到每个快乐的神,现在弥尔顿正打算用更庄重的主题,详细点说就是史诗。

耶鲁公开课 - 弥尔顿课程节选

With those criteria in mind we dug deep into the available data to assemble the accompanying slideshow of 10 model-year 2013 vehicles that, with proper attention, can reasonably be expected to keep up with traffic for at least 250, 000 miles.

FORBES: Cars That Can Last For 250,000 Miles (Or More)

Never mind that the switch market is deep in the doldrums, with market research firm IDC projecting 2% growth for the next two years.

FORBES: Pulled in a New Direction

More than a habit of mind, this optimism sprang from deep confidence in the power and future of American ideals.

CENTERFORSECURITYPOLICY: Center For Security Policy