小心，这里有一个深坑。

xiǎoxīn, zhèlǐ yǒu yīgè shēn kēng.

Be careful, there is a deep pit here.

他们在地里挖了一个坑。

tāmen zài dì lǐ wā le yīgè kēng.

They dug a hole in the ground.

不要踩到路边的坑里。

bùyào cǎi dào lùbiān de kēng lǐ.

Don't step into the hole by the roadside.