难使用的

The main difficulty in the state of art is that, the qualities of retrieval results by computers are much dependent on the features of images, and they have great differences with human beings who predict the degree of similarity of images through the image semantics.

主要问题是图像检索质量的好坏在很大程度上依赖于所使用的图像特征，它与人类根据图像语义来判断图像间是否相似的做法存在着很大的区别。这种差别的存在导致目前的大多数图像检索方法很难取得令人满意的图像检索效果。

In this paper,some instruments with different functions are combined,and by using the motion of charged particle s in the alternating magnetic field produced with Helmholtz coils,the existence of the induced electric field can be validated directly and easily.

针对磁场变化时激发产生的感生电场很难演示的问题，设计了演示感生电场存在的实验。该实验将不同功能的仪器组合起来使用，通过亥姆霍兹线圈的交变磁场对带电粒子的作用效果，直观说明感生电场的存在

Some routing scheduling software requires heavy customization using for example, complicated fourth generation macro language which is difficult to learn.

一些发送预定的软件要求重的定制使用例如，难学会的复杂的第四世代宏语言。

In paintings, Baroque gestures are broader than Mannerist gestures: less ambiguous, less arcane and mysterious, more like the stage gestures of opera, a major Baroque artform.

在绘画上，巴洛克的构图比起矫饰主义的构图更明显易懂，较少含混不清、晦涩难解和神秘的表达，而更像是巴洛克的主要艺术型态：歌剧所使用的舞台动作。

The writer then remarked that it was most salubrious weather,and the peasant agreed that it had been a fine day.

请看下面一段对话，谈话的一方是书生气十足的作家，言谈中使用的均是专业术语、难词和文绉绉的词。

Defining classes of classes, or attaching properties to classes. When using OWL Full as compared to OWL DL, reasoning support is less predictable since complete OWL Full implementations do not currently exist. Ontology developers adopting OWL should consider which sublanguage best suits their needs.

选择OWL DL还是OWL Full主要取决于用户在多大程度上需要RDF的元模型机制（如定义关于类的类和为类赋予属性）；使用OWL Full相比于OWL DL时，对推理的支持是更难预测的，因为目前还没有完全的OWL Full的实现。

According to Lobos, the webcam on your laptop or monitor has lots of limitations.

简单来说，并不是什麼状况下笔电内附的 webcam 都方便使用的（特别是不能转的，有时候真的蛮难用的）。

However, because of the limited firing arc of the back guns, and because the craft was prone to executing high speed maneuvers in combat, thus giving the gunner limited opportunities to fire back at pursuing craft, Crossfires very rarely had gunners assigned to them.

然而，由于向后射击的激光炮射界有限，而且在战斗中战斗机总是处于很高的速度中，致使炮手很难使用激光炮击中敌机，只有少量的织火级星际战斗机安排有炮手的位置。

He revelled in gross, boastful or mechanical descriptions of sex ("a hard punishing session with pulley weights, stationary bicycle and ten breath-seared laps round the track"), not least because this outraged the women's libbers with whom, in the 1970s, he was permanently at war.

他特别喜欢咸湿、夸张、机械的性描写（&一个难熬的惩罚过程，使用拉力器、健身车，健身车的跑道上还有十条令人窒息的凸起&（注6）），这令女权主义者暴跳如雷。在1970年代，他们与梅勒总是针锋相对。

In addition, there are two strands of the head is also black, and are rust, rust can be seen because of lead wire resistance increases, resulting in the signal can not be smooth, telephone through the audio signal, the low band signal can also only phone, there is always the voice of flap, and the use of the ADSL band signal is relatively high, head through the rust on it is very difficult, leading to slow or stop signal transmission.

此外有两处绞合的线头处也发黑了，都是锈，可见正是因为导线生锈导致电阻增大，导致信号不能畅通，电话通过的音频信号，频带低，信号还能通过，只是电话里老是有啪啪的声音，而ADSL的信号使用的频带比较高，线头生锈了就很难通过，导致信号传输变慢或者断流。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了