3 sentences

1. 他在事故中不幸伤到了头颅。

   tā zài shì​gù zhōng bù​xìng shāng dào le tóu​lú.

   He unfortunately injured his skull in the accident.

   Source: Dong Chinese Dictionary

2. 战士们为了保卫祖国，甘愿抛头颅洒热血。

   zhàn​shì men wèi​le bǎo​wèi zǔ​guó, gān​yuàn pāo tóu​lú sǎ rè​xuè.

   The soldiers were willing to sacrifice their lives and shed their blood to defend their country.

   Source: Dong Chinese Dictionary

3. 考古学家在洞穴深处发现了一具古代人类的头颅。

   kǎo​gǔ​xué​jiā zài dòng​xué shēn​chù fā​xiàn le yī jù gǔ​dài rén​lèi de tóu​lú.

   Archaeologists discovered an ancient human skull deep inside the cave.

   Source: Dong Chinese Dictionary