down set
- 下部集合：在数学中，下部集合（向下闭合集合）是给定偏序集合 (X,≤) 的子集 Y，使得对于所有元素 x 和 y，如果 y 小于等于 x，并且 x 是 Y 的一个元素，则 y 也在 Y 中。
网络释义专业释义
set down 放下 ; 记下 ; 登记 ; 写下
down set 下移安置 ; 水平焊接
set up settle down 建立创立 ; 建立 ; 定居 ; 建立创立定居
set down effective laws 制定积极有效的法律 ; 建立有效的法律
mask drop down set 面罩释放装置
set down to 归于 ; 认为是由于
set-down device 放置器 ; 订妥装置
vacuum m printing-down set 真空晒版机
set down to write down 写下 ; 抄下 ; 记下
双语例句原声例句权威例句
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He was the one who first set down the stories of the Celtic storytellers.
他是第一个将凯尔特说书人讲的故事记载下来的人。
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She set her glass down and slid under the covers.
她放下杯子，钻进了被子。
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Emerson would always set down new ideas that occurred to him.
爱默生总是把他突然想到的新想法写下来。
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And I believe him. Why,I have seen him set Dan'l Webster down here on this floor--Dan'l Webster was the name of the frog and sing out, "Flies,Dan'l,flies!"
VOA: special.2009.08.29
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The problems are set up so that, if you start down the right path, it should be pretty straight-forward to work it through If you start down a plausible but incorrect path, you can sometimes find yourself stuck in the weeds somewhere, and we want to bring you back in.
问题提出了，如果你从，一开始就走正确的道路，解决的途径,就一目了然了,如果你走上一条貌似正确但实际错误的道路，你会在某时某刻,发现自己陷入泥沼，于是我们就会把你拉回来。
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What that is, is an organ pipe of the type of organ that we have over in Woolsey Hall, thirty-two feet tall, this gigantic sound of down there so that's what he's trying to set up.
这是一种管风琴,梧希音乐厅就有,三十二英尺高,巨大浑厚的低音,正是施特劳斯努力展现的
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