up or down 状态 ; 向上或向下
climb up or down 爬上爬下
float up or down 上下浮动
round up or down 向上或向下舍入
powering up or down 当音源上电或掉电
up or down regulation 上调或下调
rounding up or down of 舍入向上或向下 ; 四舍五入向上或向下
Up drain or Down drain 上排水或下排水
The center of the museum is open, so people can look up toward the roof or down toward the ground floor.
VOA: special.2009.04.06
It is the coastal plain, and that provides, or that is the main highway out of Egypt or down to Egypt.
这就是海岸平原,它提供了或说它本身就是,离开埃及或者下埃及的主要通道。
it's like really, forest sit on that side, so it's really nice to sit down and read a book or something.
那一边简直就像是一片森林,在那里坐下来看看书或干点别的什么将会是件很美妙的事情。
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