栎精

例句：

1. 1. The ancient tree was said to have a unique essence that could heal the sick.
   据说这棵古老的树有一种独特的精华，可以治愈疾病。
2. 2. The loggers used this essence to make their tools more durable.
   伐木工们使用这种精华来制作他们的工具，使其更耐用。
3. 3. The local people believe that the essence of the forest has healing powers.
   当地人相信森林的精华具有治疗能力。