The Romans had to keep on cooking up new letters every time their numbers got bigger - C for 100, D for 500, M for 1, 000 - because they didn't have zeros to add on to the end.

当数字增大时，罗马人只能疲于接招，不断地创造出新的字母用来标记数字 —— C代表100，D代表500，M代表1000 —— 因为在他们的数字系统中不能将‘0’添加在数字后面。 想感觉100万有多大？

youdao

They had to write their ID Numbers, pick a language, and click their way through the computerised test: a, b, or C. True or False. Yes or No.

他们需要填写自己的证件号码，选择一种语言，在整个电脑考试中不停地点击：A、B或C，对还是错，是或不是。

youdao

Engineer C: Oh, don't forget that machine-controlled units can understand the letters, numbers and symbols.

工程师C：噢，不要忘记机器控制单元能理解这些字母、数字和符号。

youdao

C. in such high numbers, and so on.

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Numbers then explode, C. difficile dominates the gut and masses of toxins are produced.

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Until researchers can come out with a potent enough antiviral combo to account for the massive numbers of mutations that hepatitis c virus can produce, interferon will remain part of hepatitis C treatments.

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