窟窿

HSK 7-9

kūlong

hole; cavity; (fig.) shortfall; 'hole' of money

pocket; cavity; loophole; debt

墙上有个窟窿。

qiáng shàng yǒu gè kūlong.

There's a hole on the wall.

他利用了合同中的一个窟窿。

tā lìyòng le hùtōng zhōng de yīgè kūlong.

He took advantage of a loophole in the contract.