noun🔗Share对流层顶 The zone of transition between the troposphere and the stratosphere (approximately 13 kilometers). The tropopause normally occurs at an altitude of between 25,000 and 45,000 feet in polar and temperate zones. It occurs at 55,000 feet in the tropics."Airplanes often experience turbulence when passing through the tropopause, the boundary between the troposphere and the stratosphere. "飞机在穿越对流层顶,也就是对流层和平流层之间的边界时,经常会遇到乱流。weathergeographyenvironmentscienceChat with AIVocabulary GamePractice Reading