noun🔗Share树木线，森林界线。 A division in altitude (or latitude) above which trees tend not to grow on mountains."We hiked up the mountain until we reached the treeline, where the forest ended and only rocks and snow remained. "我们一直往山上爬，直到到达了树木线，那里森林消失了，只剩下岩石和积雪。geographyenvironmentgeologynaturescienceChat with AIVocabulary GamePractice Reading
