koval

例句：

1. 1.The koval tree is known for its beautiful flowers.
   科瓦勒树以其美丽的花朵而闻名。
2. 2.The koval tree produces a delicious fruit that is popular in many cultures.
   科瓦勒树结出的果实美味，在许多文化中都很受欢迎。
3. 3.The koval tree is often used as a source of wood and medicine.
   科瓦勒树常被用作木材和药材的来源。