A Palaeozoic low - grade metamorphosed sedimentary clastic sequence occurs in Vinson Massif , Antarctica.文森峰的地层为一套古生代浅变质沉积碎屑岩系.The boundaries of this massif are major dislocations.该地块的边界为大断层.The tectonic trends in the gr...
他们重新夺回了堑壕.They recaptured their trench.士兵们在堑壕阵地上打了十天仗.The soldiers fought in trenches for ten days.堑壕里的迫击炮早已开始了射击,声响愈来愈大.The trench mortars have begun to fire and the volume of sound increases....