New drilling technology has unlocked two vast pockets of shale gas with recoverable reserves of about 70 trillion cubic feet (2 trillion cubic metres).是什么意思_New drilling technology has unlocked two vast pockets of shale gas with recoverable reserves of about 70 trillion cubic feet (2 trillion cubic metres).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句