reduce,decline,decrease的区别
区别：
reduce是一种主观的减少.降低.主语是使减少的外力
decrease专指数值上的下降,
decline除了数值上的还能指能力等抽象量的下降.
例句：
He reduced the amount of money they could spend.他缩减了他们的开销。
The population decreased a lot last year.去年人口数量急剧下降。
Last year, the crime rate in Chicago has sharply declined.去年芝加哥的犯罪率明显下降。
He declined our invitation to dinner.他婉拒了我们请他吃饭的邀请。
Population growth is decreasing by 1.4% each year.人口增长每年下降1.4%。往往有具体的量化。
英语单词：reduce 是什么意思
reduce [ri’dju:s, -’du:s]
vt. 减少；降低；使处于；把…分解
vi. 减少；缩小；归纳为
[ 过去式 reduced 过去分词 reduced 现在分词 reducing ].
或：
reduce [ri’dju:s; -’du:s]
vt.
减少；缩小；削减，缩减；精简：
They have to reduce expenses this year.
他们今年必须削减开支。
降低；减轻：
She tried to reduce her weight.
她设法降低她的体重。
将…归纳；简化：
We can reduce his speech to three sentences.
我们可以把他的讲演归纳成三句话。
换算；折合：
If you reduce 3 lbs. to ounces, you have 48 ounces.
如果将3磅换算成盎司，可得48盎司。
使变为：
The heavy artillery bombardment reduced the village to ruins.
猛烈的炮火使这个村庄变成一片废墟。
His words reduced her to silence.
他的话使她哑口无言。
把…弄碎(或熔化等)；捣碎：
Their daily work is to reduce the rocks to dust.
他们每天的工作就是将岩石捣碎成粉末。
使降级；使降职：
He was reduced to ordinary soldier due to a serious dereliction of duty.
他因严重失职被降为普通士兵。
降服(使有秩序等)；攻陷(城市等)：
The teacher soon reduced the noisy class to order.
教师很快就使这个乱哄哄的班恢复了秩序。
The fortress at the entrance to the village was reduced by a sudden attack.
村口的堡垒遭到突然袭击而被攻陷。
使处境困难(或悲惨等)；迫使，逼迫[常用被动语态]：
The bad harvests in the last few years reduced the peasants to extreme poverty.
过去几年的庄稼歉收使农民变得极为贫困。
Poverty reduced them to begging for a living.
贫困迫使他们乞讨为生。
使变弱；使变瘦；使衰退：
He is reduced to skin and bones.
他变得骨瘦如柴。
约束；限制：
Business was reduced to local buying and selling when the war broke out and international trading ceased.
战争爆发国际贸易停止后，商业就只限于地方性的买卖了。
【数学】约简：
The last problem is to reduce an equation to its simplest form.
最后一道题是将一方程式化简为最简单形式。
使…浓缩变稠：
The last step is to add some salt and reduce the soup for three minutes.
最后一个步骤是加些盐然后使汤浓缩三分钟。
(用油)调稀(或冲淡)：
We can use this special oil to reduce the thick paint to a liquid thin enough to spread easily .
我们可以使用这种特殊的油将浓油漆稀释一下，使它刷起来比较省力。
【化学】还原；分解(化合物)：
Water can be reduced to oxygen and hydrogen by electrolysis.
水通过电解可以分解为氧和氢。
【外科学】使…复位(或复原)：
A doctor can reduce a fracture or dislocation.
医生能使骨折或脱臼复原。
【语音学】使(重读元音)弱化：
Some English vowel sounds which are not given weight in speech become reduced to a rather formless central vowel.
英语中有些元音在讲话时没有重读，结果成了相当不定型的中央元音了。
【摄影术】减低(底片的)强度
【生理学】使(细胞)发生减数分裂
vi.
减少；缩小；缩减；减弱
(节食)减肥：
She has been reducing for the last few weeks.
她在最近几周一直在节食减肥。
【化学】还原：
Ferrous iron reduces to ferric iron.
二价铁能还原成三价铁。
(液体)浓缩变稠：
The soup will reduce by adding some cooking starch.
汤中加些淀粉将变稠。
(油漆、颜料等)稀释：
Most paints reduce with turpentine.
许多油漆可用松节油稀释。
【生物学】(细胞)减数分裂
近义词:
decrease
变形：
vt. reduced . reducing
-reduce
dubbo通俗的理解是干什么用的
支持你，水笔别说话，复制党也别说话。
我是纯手打：
首先你要明白，你问这个问题，证明你对dubbo和nginx就不熟悉。
dubbo的负载均衡已经是服务层面的了，和nginx的负载均衡还在）
