珠宝的巧妙隐藏让盗贼一无所获。

The clever ___concealment of the jewels left the thieves empty-handed.

这个山洞为逃亡者提供了绝佳的藏身之处。

The cave served as excellent ___concealment for the fugitives.

小偷利用灌木丛做掩护，躲避了追捕。

The thief used the bushes for ___concealment to escape the chase.