by half

基本解释

If I doubled the area of the sheet, the stack would only compress by half as much.
如果将纸的面积扩大到原来的两倍，纸堆的收缩总量便缩小到原来的一半。
Reduce it by half each month and before you know it, you will not be craving it anymore.
每个月减少一半，然后再你意识到之前，你将再也不会想到它了。
America is so rich…and so wasteful…that it could probably cut its spending by half and most people would still be fat and sassy.
美国如此富有...而且如此浪费...，它或许可以减少一半开支，而大多数美国人仍会保持肥胖的体型和时髦的品位。

Leaders of the world's biggest economies agreed Sunday to cut their deficits by half or more by twenty thirteen.
In the last five years, the stock in Dow Jones Company has fallen by half.
在过去的五年间,道琼斯公司,一流的商业财经信息提供商旗下有以对商业财经领域的深度分析报道见长的《华尔街日报》报系
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And in the even case, I'd square, divide by half, call this again: in the odd case, I go b minus 1 and then multiply by a.
就直接求a的平方的二分之b次方，如果是奇数的话，就去求a的b-1次方乘以a，以此递归下去。
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In general, they have cut their Marcellus dry gas rig fleets by half or more.
FORBES: My Prediction Was Wrong: Why We Didn't Get To $8 Natural Gas