Sent_en: 2zh Any time you have a significant change in air mass there is going to be unsettled weather marking the two different air masses, said Joe Sellers, a meteorologist from the National Weather Service in Oklahoma.
Sent_yy: 俄克拉何马州国家气象局的气象学家乔·塞勒斯说：“每当空气质量发生重大变化时，就会形成出现两个不同气团的不稳定天气。”