All of that is possible, but only if you follow a related principle: the Liskov Substitution principle.
所有这些都是可能的，只要你能够遵循一个相关的原则：Liskov替代原则。
Even worse, if that is possible, far too many students who DO graduate, cannot read or compute math adequately.
更糟糕的是，还存在这样一种可能：那些“确实”毕业了的学生中，不会读书、没做过几道数学题的人更是多了去了。
At Boeing you got substantial fuel efficiency by reengineering. Do you think that is possible with the automobile?
在波音的时候，你通过工程上的重新设计使能源利用效率获得了实质性的提升，你是否认为汽车也可以通过同样的方式提升能效？
Although these precious letters do not reach, I shall nevertheless keep on trying by writing whenever that is possible.
尽管这些宝贵的信件没有寄到，一有可能，我还会继续写的。
She clasped her hands with an expression which contained all that is possible to prayer in the way of violence and tenderness.
双手合十，这种神情具有祈祷所能包含的最强烈而同时又最柔和的一切情感。
The amount of testing that is possible depends on whether you have only "blank" Controller databases, or a fully-populated database.
可能的测试量取决于您只拥有一个“空白”Controller数据库还是一个完全填充的数据库。
The real effort is to stay there, rather, in so far as that is possible, and to examine closely the odd vegetation of those distant regions.
真正的，倒不如让自己尽可能地呆在那里，努力且仔细地观察那些异域奇草。
From next Friday it will grace, if that is possible, a casino, where the dress will be eyeballed by players more intent on blowing their cash.
如果可能的话，从下周五开始，戴安娜王妃的礼服将在一个赌场展出，那里的人们更关心他们钱的输赢。
They argue, in an eternally inflating universe, every event that is possible will eventually occur — not just once, but an infinite number of times.
他们争论说，在一个永久膨胀的宇宙里，可能的任何一件事情最终都会发生，不仅发生一次而是无数次。
They argue, in an eternally inflating universe, every event that is possible will eventually occur - not just once, but an infinite number of times.
他们称，在一个无限膨胀的宇宙里，但凡有可能发生的事情终将发生——不是一次，而是无穷多次。
There are countless USES of an embedded database, but many people are not aware of some of the client-side functionality that is possible with Derby.
虽然嵌入式数据库的应用不计其数，但是许多人都不知道用Derby可以实现的一些客户端功能。
That big empty lock screen could sure use some enhancements (which would be very suitable for tablets), and thanks to a few apps, that is possible on Android.
现在的这个空旷的锁定屏幕一定可以得到增强(这对于平板电脑来说非常合适)，而多亏了一些应用程序，Android可以做到这一点。
That is possible by leveraging the object-relational mapping code in Rails's ActiveRecord class that is the base class for all models (including your patient class.
通过利用RailsActiveRecord类的对象-关系映射代码，这是可以实现的，该类是所有模型的基类（包括patient 类）。
By the second term a chastened administration was once again seeing the value of working with Allies when that is possible. But when it is not possible, America relies on itself.
直到第二阶段，缓和过的行政部门再次查看可能与联盟国合作的价值，但当不可能时，美国依赖它自己。
Once the driver receives the coordinates, it signals the user applications about the touch and the availability of any data, and sends the applications the data (if that is possible).
一旦驱动程序接收到坐标，它就将有关触摸和任何可用数据的信号发送给用户应用程序，并将数据发送给应用程序(如果可能的话)。
It is also an urgent invitation to countries across the globe to promote safe donors and do all that is possible to safeguard patients by ensuring an adequate, safe supply of blood.
它也是向世界各国发出的一项紧急要求，要求它们促进安全献血者并竭尽全力通过确保充足和安全的血供应对病人提供保护。
'Eat' has the selectional restriction that it must be followed by a kind of food, so 'I eat sky' is not possible.
eat一词之后限跟某种食物，所以不可能说Ieatsky。
Have you ever been in the middle of speaking and suddenly…brain freeze! It is possible that you forgot something for the moment.
你是否有过这样的经历：说话到一半时，大脑突然冻结了！你可能一时忘记了什么。
"One explanation for this finding is that possible awards may be more emotionally provoking than certainty awards," says Reimann.
赖曼说：“对该发现的一种解释是，可能存在的奖励或许会比确定性奖励在情感上更具激励性。”
The mere existence of such a civilisation will tell us that long-term survival is possible, and gives us some cause for optimism.
这样一种文明的存在本身就会告诉我们，长期生存是可能的，并给我们一些乐观的理由。
It's quite possible that this is due to volcanic eruptions, because volcanic eruptions often emit gases.
这很有可能是由于火山爆发，因为火山爆发经常释放气体。
It is possible that the wellbeing of pets is driven by the underlying nature of the owner, not simply by their conscious decisions and behaviours.
宠物的健康可能是由主人的潜在性格驱动的，而不仅仅是他们有意识的决定和行为。
So it is possible that the symptoms will not finally go until your nervous system is in a better state.
可能这些症状不会彻底消失，除非你的神经系统有所改善。
Both factions have broadly agreed that the U.N. plan is a possible basis for negotiation.
两派已大致同意该联合国计划是谈判的可能基础。
I really believe that it is possible to both improve customer satisfaction and reduce costs.
我确实认为既可以提高客户满意度，又可以降低成本。
How is it possible that even an evil person can be saved merely through faith in the vow?
即使是邪恶的人，仅是由于对誓愿的信心，也能获救，这如何可能？
When somebody tells you something that sounds possible, think to yourself: "Is there any evidence for that?"
当有人告诉你一件听起来可能的事情时，你就这样想：“这有什么证据吗？”
Recently, however, they have found out that it is possible to cure many illnesses like this because the needles help the body to produce its own "medicines".
然而，最近他们发现，治愈许多像这样的疾病是有可能的，因为针帮助身体产生自己的“药物”。
Recently, however, they have found out that it is possible to cure many illnesses like this because the needles help the body to produce its own "medicines".
然而，最近他们发现，治愈许多像这样的疾病是有可能的，因为针帮助身体产生自己的“药物”。
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