常見例句雙語例句Although the amygdaloidal native copper aggregate was known in vesiculate lava at the top of the Emeishan basalts, economic copper ore deposits had not been discovered until two years ago.過去已知在峨眉山玄武巖頂部氣孔狀熔巖中含有杏仁狀自然銅，但很少構(gòu)成連續(xù)的銅礦體。 返回 amygdaloidal lava