3 sentences

1. 这就是自掘坟墓的意思。

   zhèi jiù shì zì jué fén​mù de yì​si.

   This is what digging your own grave means.

   Source: OpenSubtitles

2. 他在花园里掘了一个坑。

   tā zài huā​yuán lǐ jué le yī gè kēng.

   He dug a hole in the garden.

   Source: Dong Chinese Dictionary

3. 他是在自掘坟墓。

   tā shì zài zì jué fén​mù.

   He is digging his own grave.

   Source: OpenSubtitles