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It is difficult to get better performance in document clustering due to too many undiscriminating terms. In our study, we propose the mechanism of summary to solve the problem about too many undiscriminating terms.

不过，在使用向量空间模型时，通常会伴随著过多的杂讯，使得最后文件群集的成效被影响。

It is not difficult to see that brand-building that is today's highly competitive environment necessary for enterprises to survive, but also with the people and the unemployment and social benefit, let us quickly to start building your brand.

这是不难看出，品牌建设，是当今竞争激烈的环境所必需的企业要生存，而且还与人民和失业和社会受益，让我们迅速开始建立自己的品牌。

All such desires as lead to no pain when they remain ungratified are unnecessary, and the longing is easily got rid of, when the thing desired is difficult to procure or when the desires seem likely to produce harm.

我们希望消除痛苦，但当这一希望不可能实现时，它就是多余的，当我们欲求的东西可望不可及或这一欲求可能产生危害时，这样的欲求很容易放弃。

It's also easy to learn new ways to sell, but it's more difficult to unlearn old ways that may not be working anymore.

学习新的销售方式很容易，但是要做到不要受那些老的销售方式的影响就困难的多了。

"If honest labour be unremunerative and difficult to endure; if it be the long, long road which never reaches beauty, but wearies the feet and the heart; if the drag to follow beauty be such that one abandons the admired way, taking rather the despised path leading to her dreams quickly, who shall cast the first stone?"

倘若诚实的工作无利可图而且难以忍受；倘若这是只会使人心灰，却永远达不到美的漫长路程；倘若追求美的努力使人疲倦得放弃了受人称赞的道路，而采取能够迅速实现梦想的但遭人鄙视的途径时，谁还会责怪她呢

In this regard, music and literature seem to be much more difficult to perceive, but, with the plastic arts, you can see from the earliest to the latest achievements. We can clearly feel the venation of the plastic arts growing process as well as its value.

在这一点上音乐和文学就困难得多，而造型艺术你可以看到从最早的马斯塔巴或者最早的神殿，一直到我们最新的造型艺术成果，我们可以清晰地感到造型艺术的脉络和它成长的过程以及价值。

For vortex-liquid phase,the E-J relation could be described according to the Kim-Anderson model:U=U0(1-J/JC).While for vortex-glass phase,the electric field decays verydramatically with decreasing current density,so it is difficult to be observed with theinstrument has limited precision.In the intermediate current region,the E-Jrelations of the both phases could be fitted in terms of a phenomenological model:U=(U0/μ)[μ-1],it was concluded that the sign of μ-value changes fromnegative to positive when the temperature decreases lower than the glass-transitiontemperature Tg,meanwhile,the activation energy U enhances dramatically.Whilein the large current region,Zeldov's logarithmic model was suitable for fitthing theE-J curves of the both phase.Moreover,there was no abrupt change of U or thecharacteristic current density IC.However,the effective radius of vortex line variesremarkably around Tg.

对于涡旋液体相，小电流区的E-J关系可以用计及反跳的Kim-Anderson模型U＝U0(1-J/JC)来描述，而对于涡旋玻璃相，小电流区的电场随电流密度减小而迅速衰减，以致很快脱离了实验测量精度的范围；在中等电流区，两相的E-J关系可以用共同的唯象过渡模型U＝(U0/μ)[μ-1]来拟合，得到在玻璃转变温度Tg两侧μ值由正到负的变化，同时激活能U在Tg以下迅速升高；在较高电流区，两相的E-J关系可以很好的用Zeldov对数模型来描述，拟合结果表明U在Tg两侧的趋势没有明显变化，但是涡旋线的有效半径发生了显著变化。

Traditional water gauge has not adapted to the development of the society because of its charge efficiency to be low and it is difficult to charge.

因此传统水表收费效率低、收费困难，己不适应社会的发展。

It is very difficult to overtake at many circuits, so the teams have to give their drivers the decisive fractions of a second they need to get back on the track ahead of a rival with fast and well-timed pit stops.

由于在很多赛道上超车是非常困难的，所以车队不得不通过快速而精准的停站来帮助他们的车手赢得零点几秒钟的时间，争取抢在对手之前回到赛道上。

It has become so difficult to get access to engineers, to platforms to drilling rigs and whatnot .

要找到工程师和钻探设备的平台或者类似的东西，非常困难。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷