野性

例句：

1. 1. The animal's behavior was quite wild.
   这只动物的行为相当野性。
2. 2. The savage tribesmen were fiercely fighting each other.
   野蛮部落的战士们正在激烈地交战。
3. 3. The uncivilized practices of the tribe had been a cause for concern.
   部落的未开化习俗引起了人们的担忧。