If something that you want eludes you, you do not succeed in achieving it.

The gold medal continues to elude her. 金牌继续和她无缘。

They had minor breakthroughs but real success eluded them. 他们取得了一些小的突破，但没有取得真正意义上的成功。

to not be caught by someone

They eluded the police by fleeing. 他们纷纷逃走，避开了警方的搜捕。

If a piece of information eludes you, you cannot remember it.

I know who you mean but her name eludes me. 我知道你说的是谁，但就是想不起她的名字了。