所以请确认索引速度确实很慢，而且很慢的原因确实是因为Lucene自身而造成的。
So be sure your indexing speed is indeed too slow and the slowness is indeed within Lucene.
她打字很慢而且错误百出。
1994年，没有人从互联网上赚到真正的钱，因为那时的互联网还很慢而且很难使用。
In 1994, nobody was making any real money from the Internet, which was still very slow and hard to use.
温度变化得很慢，而且被控制在相对严格的范围内。
Changes in temperature occur slowly and are constrained within relatively tight bounds.
虽然大多数遗留平台已经开始进行自我改造并提供新型接口，但是这一进程仍然很慢而且往往事与愿违。
While many legacy platforms are beginning to modernize and provide new interfaces on their own, this progress is slow and counterproductive.
每一类算法的个数都有限，而且新算法出现的很慢。
The number of algorithms in each category is limited and new ones emerge at very slow rate.
使用公司密钥加密很慢，而且直接与加密的数据大小成正比。
Encryption using a public-private key is slow and is directly proportional to the size of the data being encrypted.
一开始我骑的很慢而且有点晃动，但是到了年底就快多了而且很适应。
At first, I was slow and a bit wobbly, but by the end of the year I was faster and fitter.
预测家预期在今年，3.5至3.6亿台电脑将会被卖出，而且市场也将继续成长，尽管很慢。
Forecasters expect 350m-360m of them to be sold this year and the market is likely to keep growing, if slowly.
开发人员相互覆盖彼此所做的修改，我在服务器上所做的改变让你的开发机器上的代码中断运行，这些都让远程开发速度很慢而且非常困难。
The changes I make on the server break the code on your development machine. Remote development is slow and difficult.
难以操作，没法像2D界面那样做很多选择，而且运行速度很慢。
It's harder to manipulate, it doesn't show the choices as well as a 2D interface, and it tends to be slower to use.
如果雅思阅读句子时一次只读一个单词，那么你的阅读速度就会很慢，而且很有可能对所读到的大部分内容产生误解。
If you read IELTS each word in a sentence once at a time, you will read very slowly and most likely misunderstand the meaning of much of what you read.
使用BP算法训练多层网络的速度很慢而且事先难于确定隐节点和隐层的适当数目。
Training a multilayer neural net by BP algorithm is slow and it is difficult to choose the number of hidden units and layers in advance.
二十五年前，关系数据库运行很慢，bug 成堆，没有标准，而且占用大量内存。
Twenty-five years ago, relational databases were slow, buggy, nonstandard memory hogs.
像这样遍历html集合会导致逻辑错误，而且也很慢，因为每次迭代都进行查询(如图3 - 4)。
Looping through HTML collections like this may lead to logic mistakes, but it's also slower, due to the fact that the query needs to run on every iteration (see Figure 3-4).
实际上，有些企业的存货周转率是很慢的，而且预付费用甚至是不能转化为现金的。
Actually, in some firms, inventories' turn over is slow, and prepaid expenses can't even turn to cash.
在几个弯道中，我一直都跟在库塔后面，他跑得很慢，而且在直线赛道上做之字运动。
A couple of corners in I was following Coulthard who was going very slowly and zigzagging on the straight.
实际上，有些企业的存货周转率是很慢的，而且预付费用甚至是不能转化为现金的。
Actually, in some firms, inventories' turnover is slow, and prepaid expenses can't even turn.
尽管他的装弹速度很慢而且上弦距离长，威力却很大。
It is slow to reload and lacks the distance of drawn bows but makes up for it in power.
如果缺少了这些有着强大的人格魅力的领袖人物，大规模的变化依然有可能发生：但是，变化的速度会很慢，前景会显得很黯淡，而且还会有没完没了的研讨会。
It may be possible for large scale change to occur without leaders with magnetic personalities, but the pace of change would be slow, the vision uncertain, and the committee meetings endless.
我记得持枪人的声调里带着害怕与生气因为杰里米是很慢的，而且我记得当时我想知道他为什么那么慢。
I remember the fear and anger in the gunmen's voices because Jeremy was being slow, and I remember wondering why he was being slow.
本人因为很多都没学过，看了一周特别打击，而且进度很慢。
Because oneself are done not have more very much had learned, visited a week special blow, and rate of progress is very slow.
很多早上我都要花一个小时才能进入状态，第一个小时干什么都很慢而且很艰难！
Most mornings it takes me about an hour to really get in the groove , The first hour is very slow and challenging .
不断以来，看英语课本花了本人很多时间，在写作方面老是出错，发音也很糟，而且本人只能很慢地说英语。
Still, reading English texts took me a long time, I made lots of mistakes when writing, my pronunciation was bad, and I could only speak English very slowly.
齿轮磨损，难以改变方向，在陡路上行驶得很慢，而且好像永远到不了目的地，这就是公司的车。
It tends to get stuck in first gear, has trouble changing direction, hesitates when the road gets rough and never seems to reach its destination. It's a company car.
尽管我们的英语说的很慢，而且不停地打手势(美国人说“我要让你弄明白”的意思)，服务员还是花了好几分钟才明白我们到底要找什么。
Despite speaking slowly in English and gesticulating wildly (American for "I want you to understand me"), it still took the attendant several minutes to figure out what it was we were looking for.
尽管我们的英语说的很慢，而且不停地打手势(美国人说“我要让你弄明白”的意思)，服务员还是花了好几分钟才明白我们到底要找什么。
Despite speaking slowly in English and gesticulating wildly (American for "I want you to understand me"), it still took the attendant several minutes to figure out what it was we were looking for.
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