Finally the penny drops and a collective "ahh" is emitted as two women and the rickshaw driver rush off excitedly.
最后他们总算弄明白了，众人如释重负，齐声发出“啊”的叹息声，两个女人和人力车夫很兴奋地走开了。
If successful, by 2020, as the price of microchips drops to below a penny piece, telematics could be adopted in thousands of miles of highways in the United States.
如果成功的话，到2020年，当微芯片的价格降到不足一美分一片时，远程信息技术就会应用在美国成千上万英里的公路上。
Perhaps there'll be a valuable learning experience, where someone teaches you about a difficult subject, and the penny finally drops.
或许他们会变成值得学习的经验，有些人会在某些非常难的科目上教导你，最后会破点小财。
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