It is not yet clear how learning triggers the retention of the new brain cells and the laying down of memories.

至于学习如何触使这些新脑细胞的保留下来并产生记忆还不得而知。

youdao

Even his recreation consisted in change of study, laying down one subject to take up another.

连他的消遣都是放下一个科目又拿起另一个科目的变换研究。

youdao

There are only a few paved roads, but asphalt crews are laying down new ones every day.

现在这里铺过的路只有几条，但每天都有人员在铺设新的沥青路。

youdao

Mr Rogge said that like the messengers in ancient times who shared news of the Olympic truce - the laying down of arms for the Games - "the torchbearers who carry this flame to London will spread the message of sport's capacity to promote peace and to make our world a better place".

BBC: London 2012: Olympic Games flame lit in Greece

Some judges, when elevated to the Supreme Court, have taken it as licence to act as philosopher-kings, laying down the kind of enlightened laws that the oafs in Congress ought to have passed but did not.

ECONOMIST: The Supreme Court

Begin by laying the fish, skin-side down, into a hot pan.

WSJ: Michael Schwartz's Striped Bass with Grapefruit and Pickled Radish