An additional and difficult-to-classify category of software is the utility, which is a small useful program with limited capability.
工具软件是附加的、难以分类的软件，它是一种容量有限、小巧实用的程序。
Thing is that it's very difficult to classify.
问题是很难进行分类。
Fossil finds are notoriously difficult to classify—people disagree on which physiological features are important; and each new find represents a class of one.
对化石发现进行分类是出了名的难——对于各种生理特性重要程度的判定可谓众口难调，而且一有新发现便会编入一个新的分类单位。
The subset of 100 messages is used because it is a small enough number that it is not too difficult to manually classify.
使用 100条信息是因为这样的数量会比较容易进行手动分类。
It is therefore a construction which integrates very different needs and develops diverse proposals, which makes it difficult to classify it into a specific architectural typology or type of project.
由于该项目集不同需求于一体，还同时运用了不同设计方案，使得它很难被归类到一个特定的建筑类型或者项目类型中。
Thingamajig Something difficult to classify or whose name has been forgotten or is not known.
某人或某物不易分类的事物或名字被忘记或不知道的人。
But although their music might be difficult to classify, it's also difficult not to enjoy.
虽然很难将他们的音乐分类，但也会很容易就喜欢上他们的音乐。
The shallow-water, slow submarine is significantly more difficult to detect and classify acoustically than the cold war threat, due to the complex propagation, high clutter, and low target Doppler.
水浅的地方水，慢的潜水艇重要地是更困难的听觉地发现而且分类超过冷战威胁，由于复杂的增殖，高混杂，和低点目标都普勒。
In the process of studying the attributes of the right of privacy, we will find that it is difficult to classify the right of privacy.
研究隐私权基本属性的过程中，我们会发现很难将隐私权归入一个属性的权利当中。
The dynamic characteristics of burstiness and self-similarity make it difficult to classify the various applications from internet traffic.
网络流量表现出突发和自相似等动态特性，使得网络应用很难进行准确分类。
It is a new and difficult research problem to classify rhetoric strategies scientifically.
修辞策略的科学分类是个艰难的课题。
It is a new and difficult research problem to classify rhetoric strategies scientifically.
修辞策略的科学分类是个艰难的课题。
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