然而，量子计算机有它们领域自己的挑战，不可能适合所有的运算任务，但是，它们能改变我们对计算能力的思考方式。
However, quantum computers have their own challenges and wouldn't be suitable for all computing tasks, but they could reshape the way we think of computing power.
比尔·盖茨和保罗·艾伦抓住了机会，他们将早期的个人电脑变成了时代的突破——“牵牛星”需要软件，它需要一个执行有价值运算任务的程序语言。
Bill Gates and Paul Allen seized the opportunity to transform this early PC into a breakthrough — the Altair needed software, a programming language that could make it perform useful computing tasks.
我们知道除法运算很耗资源，所以DeferredDivision对象将要求Calculator类型来处理该任务。
Imagine that it is expensive to do division, consequently the DeferredDivision object will ask the Calculator type to handle that task.
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