The thieves must have wormed in through the narrow space between the boards in the hall cupboard.

小偷（们）肯定是从大厅碗碟橱之间的狭窄通道中钻进来的。

youdao

If you have the faintest idea what that means, you will be doing quite a lot better than quite a lot of the individuals who sit on the boards of big international banks and are supposed to keep them on the straight and narrow.

BBC: Does JP Morgan loss show regulators' great failure?