因为沉积作用是快速的, 分选作用和层理就得不到很好的发展.Because deposition is rapid, sorting and stratification are generally not well developed.轻的籽粒可以通过空气动力,即气流分选机清理出来.Light kernels may be removed by a pneumatic or air seperator.砂粒在波浪分选作用下从粉砂及粘土中...
虽然天气越来越热，他们仍全部戴着高顶礼帽，穿着燕尾服。They were all in top hats and cutaways despite the growing heat.我戴着假睫毛，穿着小了两号的毛衣。I was wearing false eyelashes and a sweater two sizes too small.她细腻光滑、美丽白皙的脖子上戴着一条精致的链子。She wore a fine chain ab...