单词	language learning behefs
释义	language learning behefs 语言学习观念
随便看	shallow underground tunnel shallow underground water shallow undermining method shallow understanding shallow underwater burst Shallow Underwater Missile Shallow Underwater Missile System shallow unsymmetrical load tunnel shallow-vaulted roof shallow vein zone deposit shallow velocity model-building shallow velocity structure shallow v groove shallow views shallow village schoolmaster shallow VSP shallow waisted shallow-waisted shallow waqter floating mine shallow water acoustic channels shallow water acoustic propagation shallow water acoustics shallow water acoustic tracking system shallow-water ambient noise shallow-water anchorage