Most of what we know about the earth below the limited depth to which boreholes or mine shafts have penetrated has come from geophysical observation.是什么意思_Most of what we know about the earth below the limited depth to which boreholes or mine shafts have penetrated has come from geophysical observation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句