大学英语词汇短语释义解析及例句 top and bottom
释义：
top and bottom 上下；顶层及底层
例句：
Leave a gap at the top and bottom so air can circulate.
在顶部和底部各留一点空隙，这样空气就可以流通了。
The top and bottom line of each column on the page should align.
版面每栏的头一行和末一行要对齐。
Concentrations of positively charged particles develop at the top and bottom of the cloud, but the middle region becomes negatively charged.
带正电荷的粒子集中在云团的顶部和底部，但中间区域形成的是带负电荷的粒子。
You want a hat that will balance the top and bottom out.
你需要一顶能平衡上部分与下部分的帽子。
A dot will appear at the top and bottom so that you can move it.
链接顶部和底部将显示一个点，表示您可以移动它。
Blurry areas at image top and bottom right are caused by cloud cover.
图片右上和左上角的朦胧则是由云层遮蔽所致。
In a basement, the top and bottom plates are often different lengths.
地下室的顶板和底板的长度往往不同。
Also notice the navigation controls at the top and bottom of the panel.
还请注意到面板顶部和底部的导航控件。
Top and bottom sizes can be mixed and matched, and many are adjustable.
上装与下装的各种尺寸可以混合搭配，而且许多是可以调节的。
Fold your top and bottom finished edges down where they loosely cover the skewers.
把顶端和底部包好边的布折起，盖住叉子。
Circles are drawn in top and bottom halves, from largest diameter to smallest.
圆形按直径从最大到最小绘制在上半部和下半部。
So that covers the top and bottom rows of the grid, but what about the middle row?
了解顶部行和底部行之后，那么什么是中间行呢？
If not, a specially designed tool will be used to pry apart the top and bottom flanges.
如果螺栓无法拆卸，将使用一种专门设计的工具把上下法兰盘撬开。
The Master Page has sections at the top and bottom for header and footer information.
MasterPage在顶部和底部有头部信息与注脚信息。
The textured top and bottom keep it from sliding, so your projects stay where you want them.
特定结构的顶和底可以防滑，这样垫着的东西就会老老实实待在原地了。
The following example shows how to create a canvas in a frame with labels at the top and bottom.
下面的例子展示了如何在上下端有标签的帧中创建画布。
This indicated a much sharper disparity between the top and bottom than existed two decades ago.
这表明社会上层与底层之间的差距比20年前更为显著。
This is not ideal for watching widescreen movies: you get a thick black "letterbox" bar top and bottom.
用这个屏幕看宽银幕电影可不怎么样：你会在电影上下各得到一条黑黑的粗条。
Humans are wired to calculate the distance of an object by using the vertical Angle between its top and bottom.
人类通常是通过一个物体上下间的的垂直角度来计算与它相隔的距离。
