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When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。The turning point in the proces...
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It has been apparent that in other areas standards have held up well...显然，这些标准在其他地区执行得很好。She browsed in an up-market antiques shop...她逛了一家高级古董店。Thomas screwed the letter up into a ball...托马斯把信揉成一团。It's hard for the ...
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up的现在进行时为：upping...
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up的反义词有：down。adv.up的反义词（向上;在上面;起来）：down。...
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up的一般过去时为：upped...
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up的现在完成时为：upped...
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adv.在上面，在高处，起床，起来，向上，由低到高adj.向上的，上升的，竖立的，垂直的，举起的vt.& vi.增加，加速，提高，举起，拿起prep.在…的上端，向高处，沿…而去，向…上游n.上升，升高，兴旺，繁荣，上坡，（价格等）上涨...
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up的音标：up的英式发音音标为：[ʌp]up的美式发音音标为：[ʌp]...