n (1)沙子(fine material made of very small pieces of rock，shells，etc that is often found on beaches and in deserts)[U]：fine/loose/quick/singing～細(xì)/散/流/鳴沙;～hill 沙崗(丘);S～is used in the making of glass. 沙子用來制造玻璃。
(2)沙灘(地)(area or expanse of sand，esp on beach)[U，C 通常pl]：dig/play in the～s on the beach 在海邊的沙灘上挖洞/玩;play/lie on the～(s)在沙灘上玩/躺著;a beach with beautiful～s 一處有美麗沙灘的海岸;Camber S～s 坎伯沙洲;
build on sand 不切實(shí)際：He has very little experience of business，and the whole organization was built on～. 他沒有經(jīng)營經(jīng)驗(yàn)，整個(gè)組織都是不切實(shí)際的。
the sands are running out 沒有多少時(shí)間了：The～s are running out，we have to fulfil our task this evening. 沒多少時(shí)間了，今晚我們必須完成任務(wù)。
→′sandy adj 沙質(zhì)的;沙色的;′sandiness n 像沙子的物質(zhì);沙色彩;′sandbag n 沙袋，沙包;′sandbank n 沙堤(洲);′sand-bar n 沙洲;′sand-blast n 噴沙;′sand-castle n(兒童在沙灘上筑的)沙堡;′sand-fly n 沙蠅;′sandpaper n 砂紙;′sand-pit n 沙坑;采沙場;′sand-shoes 沙地鞋;′sandstone n 沙巖;′sandstorm n 沙暴;′sand-yacht n(裝有車輪和帆，在沙子上行駛的)沙船;
vt(1)用沙(砂紙)擦 (smooth or polish，as with sand or sandpaper)[T+n，T+n+adv(down)，C+n+adj]：～the floor/the furniture (down) before varnishing it刷油漆前要把地板/家具用砂紙磨光;～the floor smooth 把地板打磨平滑;
(2)撒沙(sprinkle or cover with sand or similar material)[T+n]：～an icy sidewalk/road 在結(jié)冰的邊道/路上撒沙子;
→′sander n 砂輪磨光機(jī)