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....
This may sound trivial, but I assure you it is quite important!这听上去也许微不足道，但是，相信我，它十分重要！I know it sounds trivial , but I'm worried about it.我知道这事听起来微不足道，但我还是放心不下。There are a few trivial slips in this lesson.在这篇课文中有几个...