dí / rén / bèi / bāo / wéi / zài / shān / gǔ / lǐ / tū / wéi / shī / bài / hòu / bì / sǐ / wú / yí

敌人被包围在山谷里，突围失败后必死无疑。

The enemy was surrounded in the valley and would surely die if the breakout failed.