bottom hold down 井底防上滑器 ; 底部压住
bottom slow down switch 底部减速开关
bottom blow-down 底部排污
bottom hole-down 底孔向下
bottom blow down valve 底部排污阀
Down to the bottom 一步一步
Top-down and bottom-up perspectives 自上而下与自下而上管理的不同看法
He swam down and retrieved his glasses from the muck and slime at the bottom of the pond.
他潜下水去,从池塘底部的烂泥污物中找回了眼镜。
There was a new effort to build wealth from the bottom up, rather than from the top down.
VOA: special.2011.03.24
Well, my usual style of programming would be to implement the one that's lowest down in the hierarchy near the bottom.
一般我的编程风格是,先构建等级中最低的东西,也就是靠近地层的东西。
if you've got a hill or valley and there's a cart on wheels it's going to go down to the bottom.
如果我们有一座山或者山谷,并且,有一个有轮子的车,这辆车会自动滑到底部。
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