(1)被(褥，床)单(broad piece of linen，cotton，etc;cloth eg for a bed)[C]：put fresh～s on the bed把新洗干净的被单铺在床上;change～s 换被单;tear an old～into cleaning rags 把一个旧床单撕做抹布;〖同〗blanket，covering，coat;

(2)薄片(板)(broad，thin，usually rectangular piece of any material)[C，常pl]：a～of aluminum foil/glass/tin/ice 一张铝箔/一块玻璃/一块镀锡铁皮/一块冰;～copper/glass/metal/iron 铜片/平板玻璃/金属薄板/薄铁皮;〖同〗leaf，piece，plate;

(3)(一定规格的)一张纸(piece of paper in a standard size for writing or printing on)[C]：two～s of B5 两张B5的纸;Each～was covered with small，neat handwriting. 每张纸上都写着工整的小字。

(4)一片(层)(broad，continuous expanse of material covering a surface)[C常pl](infml)：a～of ice/flame/water 一层冰/一片火海/一片汪洋;Flowering～s of water-lilies stretched across the lake. 大片大片盛开的睡莲遍布湖面。Rain was coming down in～s. 大雨滂沱。～lightning 片状闪电;

→′sheeting n 用作被(褥、床)单等的料子;护堤板