Wind erosion is one of the most calamity weather phenomenon in loess hilly-gully area of Hebei Province, it often occurs in winter or spring.是什么意思_Wind erosion is one of the most calamity weather phenomenon in loess hilly-gully area of Hebei Province, it often occurs in winter or spring.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句