Since they can and do successfully inter-breed, they cannot be classed as different species.
既然它们能够而且确实可以成功杂交繁殖，它们就不能被归为不同的物种。
They're still constrained by funders, launch providers and a series of regulations—all of which rein in what CubeSat developers can and cannot do.
他们仍然受到来自资助者、发射供应商和一系列法规的限制，所有这些都限制着CubeSat开发人员可以做什么，不能做什么。
What I can do is what you cannot do.
我能做的是你不能做的。
"Wife," said the fisherman, "how can you be king—the fish cannot make you a king."
“老婆，”渔夫说，“你怎么能当国王呢——鱼不能让你当国王。”
People cannot shoot animals here, but they can only shoot pictures.
人们不能在这里射杀动物，但他们可以给动物拍照。
This work can support the poor and help charities who cannot pay for staff members.
这项工作可以帮助穷人，帮助那些无法支付工作人员薪水的慈善机构。
Even if young infants can reflect on their experience, they certainly cannot express this aspect of the self directly.
即使幼儿可以反思自己的经历，他们显然也无法直接表达自我的这一方面。
The law cannot legislate filial responsibility any more than it can legislate love.
法律不能给爱情制定法律，更不能为子女的义务而立法。
While you cannot control what life gives you, you can seek out guidance to steer you in the right direction.
虽然你无法控制生活给你的东西，但你可以寻求指引，引导你朝正确的方向前进。
You cannot borrow any books during the holiday, but you can read them in the library.
放假期间你不能借任何书，但你可以在图书馆里阅读。
Lawyers who have studied mathematics can master the legal principles in a way that most others cannot.
学过数学的律师可以掌握大多数人无法掌握的法律原理。
Though people of two countries cannot go across the border without permission, animals, however, can cross the border freely.
虽然两国人民未经许可不能越过边境，但动物可以自由跨过边境。
They're still constrained by funders, launch providers and a series of regulations-all of which rein in what CubeSat developers can and cannot do.
它们仍然受到资助者、发行供应商和一系列规则的限制——所有这些都约束了CubeSat开发人员所能做和不能做的事情。
We have no chance of competing against machines on frequent high-volume tasks, but there are things we can do that machines cannot.
在频繁的大批量任务上，我们没有机会与机器竞争。但有些事情我们可以做，而机器做不到。
Populations cannot grow unless the rural economy can produce enough additional food to feed more people.
除非农村经济能够生产足够的额外粮食来养活更多的人，否则人口不可能增长。
It is lumpy: you can offload parts of your share portfolio, but you cannot sell off the kitchen.
这很麻烦：你可以抛售股票组合的一部分，但你却不能单卖一个厨房。
You cannot imagine how lonely and helpless one can be on the outside after eighteen years in prison.
您是无法想象得到，一个服刑十八年的人到了外界可能会多么的孤独和无助。
The total volume of water in the saturated sample must therefore be thought of as consisting of water that can, and water that cannot drain away.
"因此，人们认为充满水分的岩石样本的总含水量既包括可能会渐渐流失的水分，也包括不会流失的水分。
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