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down的复数形式为：downs...
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down的一般过去时为：downed...
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adv.（坐、倒、躺）下，向下，（表示范围或顺序的限度）下至prep.（从高处）向下，（表示位置）在…的下方，（表示方向）沿着…向下，（表示时间）自…以来adj.向下的，沮丧的，计算机或计算机系统停机，（以…）落后于对手的n.（鸟的）绒羽，绒毛，软毛，汗毛vt.放下，（尤指大口或快速地）喝下，使摔倒，击落（敌机等）vi.[常用于祈使句中]下去，下来，卧倒，下降...
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down的第三人称单数（三单）为：downs...
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I have seen him walking down to the shops a mile or so away...我看见他朝大约一英里以外的商店走去了。The tears coursed down his cheeks...他泪如雨下。The basketball nets hung down from the ceiling at either end of the gymnasium...篮筐分别从体育馆两头的天花板上悬吊...
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She dusted herself down and left to build her own career.她重振旗鼓去开创自己的事业了。Try to support each other when one of you is feeling down.当有人觉得情绪低落时，要努力相互打气。One of the office girls was down with the flu.一位女职员得了流感。...
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down的现在进行时为：downing...
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down的现在完成时为：downed...