Since the layered soil is abundant in the factual impermeable layer, the transport model of contaminant in the layered soil is of important engineering value and factual significance.是什么意思_Since the layered soil is abundant in the factual impermeable layer, the transport model of contaminant in the layered soil is of important engineering value and factual significance.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句