2 sentences

1. 他兀自低头不语。

   tā wù​zì dī​tóu bù yǔ.

   He just kept his head down in silence.

   Source: Dong Chinese Dictionary

2. 任凭旁人如何劝说，他兀自低头不语。

   rèn​píng páng​rén rú​hé quàn​shuō, tā wù​zì dī​tóu​bù​yǔ.

   Regardless of how others tried to persuade him, he remained silent with his head bowed.

   Source: Dong Chinese Dictionary