A contravariant delegate can be assigned another delegate of the same type, but with a less derived generic type parameter.
可以向逆变委托分配同一类型的其他委托，但需使用派生程度较小的泛型类型参数。
An interface that has a contravariant type parameter allows its methods to accept arguments of less derived types than those specified by the interface type parameter.
如果接口具有逆变类型形参，则允许其方法接受与接口类型形参指定的派生类型相比，派生程度更小的类型的实参。
That's what interface inheritance means; if you fulfill the contract of the more derived type then you are required to also fulfill the contract of the less derived type.
接口继承就是这样的；如果你要满足派生程度较高的类型的契约的话，你就必须要满足派生程度较低的类型。
Similarly, Li Songsong's approach to painting in many ways is less derived from traditional oil painting but instead from conceptual and new media theories of reproduction and representation.
也因此李松松的绘画手法，很多方面看来都和传统油画不同，而是受到「再制」和「再现」等概念，以及新媒体时代的理论所影响。
In 2008, over 60% of Expedia's revenue came from transactions involving the booking of hotel reservations, with less than 15% of its worldwide revenue derived from the sale of airline tickets.
在2008年，Expedia有60%以上的收入来源于酒店预订，而来源于机票销售的收入只占其全球总收入的15%以下。
Diesel derived from coffee is less thick and can usually be burned in an engine with little or no tinkering.
从咖啡柴油机有较少的厚度，通常可以在几乎没有更改的引擎中燃烧。
So it's optional whether the less-derived implemented interfaces are stated in the base type list?
那么就是说派生程度较低的接口是否被声明在基类列表中是可选的了？
The same kind of pleasure, though in a less intense form, is to be derived from a great deal of work of a humbler kind.
从大量层次较低的工作中也能得到同样的，只是在程度上没有那么强烈的快乐。
Thus, when you make a copy of the script, it will take less work to adapt the newly derived script.
因此当复制脚本时，采用新派生的脚本可以减少工作量。
However, most policymakers agree that the industry must move beyond corn ethanol, which is less efficient than the sugar-derived stuff and pushes food prices upwards.
然而，决策层的大多数人都同意工业界必须在玉米乙醇的基础上更进一步，因为玉米乙醇的效率不及来自糖类的能源，并且会带动食品价格上涨。
Other clever physicists derived brilliant solutions to complex problems which had bemused less talented men.
其他聪明的物理学家找到了复杂问题的非凡解决方法，这些问题让不那么有才能的人们感到困惑。
Is a class (or struct) that implements a more-derived interface also required to state in its base type list that it is implementing all of those less-derived interfaces?
一个实现了派生程度较高的接口的class或者struct必须要在其基类型列表中声明它实现了那些派生程度较低的接口吗？
It would have been impossible for me to have told anyone what I derived from these novels, for it was nothing less than o life itself.
那时，要告诉别人我从这些小说中获得了什么收益是不可能的，因为我所获得的完全是对生活自身的感受。
These chemicals are compatible and processable in urethane foam formulations and less flammable than foams derived from other conventional type glycols.
这些化学制品适合于尿烷泡沫加工，并较传统类型二元醇衍生的泡沫不易燃烧。
The derived class can restore the access level of an inherited member. The access level cannot be made more or less restrictive than the level originally specified within the base class.
派生类能够恢复继承的成员的访问级别，但是改变基类定义的访问级别，增加或者减少都是不可以的。
Note that, in general, derived classes can be less trustworthy than the class they derive from, though in some cases they share the parent class's identity.
请注意，一般来说，衍生类别会比它们衍生来源的类别还不可靠，虽然某些情况下它们会共用父类别的识别。
We are faced with a challenge derived from a world view. We need our own world view, no less comprehensive but based on the decent values we believe in.
我们正面临着另一种世界观的挑战。我们需要自己的世界观，与对方同样无所不包，但最终依然植根于我们坚信不疑的美好信念。
Comparing with the usual forward mapping methods, this algorithm generates derived images with less errors and tackles the problems associated with multiple reference images.
与通常的正向映射算法相比，该算法克服了多幅参考图像所带来的计算量成倍增长等问题，而且误差较小。
The same kind of pleasure, though in a less intensce form is to be derived from a great deal of work of a humbler kind .
从大量较为低下的工作中也能得到同样的、虽然在程度上没有那么强烈的快乐。
Inheritance guarantees that any derived class will have the interface of the base class and nothing less.
继承保证任何派生类将有接口的基类而已。
Conclusion: (1) Donor derived leukocyte infusion can induce CML post BMT to cytogenetic and hematological CR. It has also therapeutic effects on acute leukemia relapse but is less sustained.
结论：(1)供者白细胞的输注能使某些BMT后慢性粒细胞性白血病遗传学及血液学复发患者完全缓解。
The satisfaction derived from food and that derived from the enjoyment of a work of art are, in acting man's judgment, a more urgent or a less urgent need;
从食物得到的满足，与从艺术品的欣赏后得到满足，在行为人的判断中，是一个较迫切的或较不迫切的需要；
It would have been impossible for me to have told anyone what I derived from these novels, for it was nothing less than a sense of life itself.
关于我不可能告诉别人自己阅读这些小说有何收益，因为我所获得的就是对生活自身的感受。
Some believe the regulatory hurdles for treatments derived from a patient's own cells will be lower than those where the cells come from donors, since there is less risk of cell rejection.
一些人认为来自于自身干细胞治疗的病人，其治疗的调节风险低于那些捐赠干细胞治疗的病人，由于前者细胞排斥的风险会更低。
The drag coefficient derived from filed measurement was 15 percent less than that of wind tunnel test. On the contrary Reynolds number has a minimal effect on lift force and moment coefficient.
结果表明：雷诺数对阻力系数影响较大，现场实测值比风洞试验所得值小约15％，对升力系数及力矩系数影响较小。
Relative errors between the deviation of the real fault symptom parameters and of the fault derived from the model are controlled less than 5%.
故障诊断模型症兆变量与实际故障症兆变量变化值相对误差控制在5%内，且不会对故障类型的判断产生影响；
Ingredients: Plant Derived Cleaning Agents Coconut, Palm Kernel Based Surfactants, Filtered Water, Naturally Derived Quality Control Agents and Preservative less than 0.1%.
植物源清洁成分椰油、棕榈仁基表面活性剂，过滤水，天然质量调节剂，防腐剂小于0.1%。
Ingredients: Plant Derived Cleaning Agents Coconut, Palm Kernel Based Surfactants, Filtered Water, Naturally Derived Quality Control Agents and Preservative less than 0.1%.
植物源清洁成分椰油、棕榈仁基表面活性剂，过滤水，天然质量调节剂，防腐剂小于0.1%。
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