基本解释[能源科学技术]海底冲积扇英汉例句双语例句Upward - fining channels may occur in a wide range of environments, from submarine canyon to alluvial fan.向上变细的水道可以出现在好多种环境中， 从海底峡谷到冲积扇。submarine alluvial fan更多例句专业释义能源科学技术海底冲积扇