frontal system
Longman Dictionary of Contemporary English 5++LDOCE 5++ˈfrontal ˌsystem noun [countable] technical HEMa weather front1(12) 〔气象〕锋系
Examples from the Corpus
frontal system• Flight directors were keeping close tabs Tuesday on a frontal system in the Midwest.ˈfrontal ˌsystem nounChineseSyllable
a front1(12) weather Corpus

