bristlecone

例句：

1. 1. The forest was filled with the sound of rustling boughs and the occasional cracking of a bristlecone.
   森林里充满了树枝的沙沙声和偶尔传来的球状松树断裂声。
2. 2.The hikers were surprised to find themselves standing next to a towering bristlecone.
   徒步旅行者惊讶地发现自己站在一座高大的球状松树下。
3. 3.The old man carefully picked up a bristlecone from the ground, marveling at its unique shape.
   老人小心翼翼地从地上捡起一个球状松果，对它的奇特形状感到惊奇。