to die of old age

• 老死

to die of old age的用法和样例：

例句

1. I would choose to die of old age.
   我愿意老死。
2. It cost three times the ordinary price to buy a fowl, and then it was tough and likely to die of old age if not immediately killed.
   买只活鸡要付三倍于寻常的价钱，不但肉老难嚼，而且不立刻杀掉，就会马上老死。