那男孩光着脚在沙丘间飞跑.The boy galloped over the dunes barefoot.沙积集起来成了沙丘.The sand massed to form a dune.在这里，巨大的沙丘向四面八方延绵不绝，一望无垠。Here, massive dunes stretched in every direction as far as the eye could see....
They were conversing in German, their only common language.他们正用德语交谈，这是他们唯一的共同语言。I find that conversing with her is quite difficult.和她交谈实在很困难.They were conversing in the parlor.他们正在客厅谈话....