As widespread and significant as they are, though, automobiles themselves have been to date relatively unconnected to each other. They are big, dumb, fast-moving hunks of metal.
尽管汽车如此广泛和重要，它们仍然过时了——因为每一辆车都与其他的车不相往来，它们只是一块块默默赶路的金属。
Unlike thimble, the words thumb, numb, and dumb have unetymological mb in spelling, though they do not end in l.
与thimble不同， thumb, numb, 和dumb这几个词在拼写上有非词源性的mb，虽然他们不以 l 结尾。
What that means in essence is that tiny computer chips, though relatively "dumb" on their own, can be added to billions of mundane objects and, thereby, yield substantial economic benefits.
实质上它的意思是：微小的电脑芯片，虽然自身相对“沉默”，却可以被附加在世间无数平凡的物体之上，并借此产生可观的经济效益。
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