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rEDuCE By的意思

reduce to “降低到……,减少到……”,介词to后面接的是最终的结果,也就是最后的位置或程度。 例如: The temperature is 36 degrees,but it will be reduced to 20 degrees in the night. 现在气温40度,但是夜间将会降低到20度。 reduce by “降低...

reduce to减少到…… reduce...to...把……减至…… be reduced by (被动形式)减少了…… 如: reduce to 5 (减少到5) be reduced by 5/ 5% (减少了5/减少了5%)

reduce to (意为减少到...) reduce by (意为减少了...)

reduce to 减少到(即知结果) reduce by 减少幅度(最终结果为原量减去幅度) 如100如果结果是90,那就是reduce to 90或reduce by 10%

他们的表达意义不同,一个是降低到(reduce to)而两一个是降低了(reduce by)。 reduce…to…应该是指“降低到……(某个位置、程度)” 例句: The tempeatue has been educed (from 40 degrees)to 28 degrees.温度从40度降低到了28度。 reduce…by…...

Reduce by 是减少了xxx 比如:The price of apple has reduced by $1. Reduced to 是减少到了 比如:The price of apple has reduced to $1.

reduce by 减至 be(get) used to doing sth 完全一样

因为一直用sth.be.reduced 所以就理解为形容词了

请你看这道关于万有引力的题: If the distance between two masses is increased by a factor of 5, the gravitational force of attraction between them will a. increase by a factor of 5 b. remain Same c. reduce by a factor of 25 d. r...

中只有少部分需要处理在mapreduce中,不需要处理的输入只要不collect,就不会进到reduce中,但是spark中好像进入reduceByKey的,一定是一个JAVAPairRDD( 不好意思我用....

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