原始输入字母(如果不是小写)。

Original input letter (if not lowercase).

youdao

输入字母的地方是不是输入了数字？

Was a number entered in place of a letter?

youdao

为了安全起见，请输入字母的形象。

For security purposes, please type the letters in the image.

youdao

If you can figure out why fails on three letters instead of 12, you'll be more than half way to solving the problem.

如果你能明白为什么程序,在输入三个字母的单词的时候没法运行,你就已经解决了问题的一半了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Its name is malloc for memory allocation and what malloc does for us is we say, hmm, the user has typed in a three-letter word.

它为我们分配内存地址,它为用户输入的3个字母单词,分配地址。

哈佛公开课 - 计算机科学课程节选

So if your word game doesn't work when the words are 12 letters long, instead of continuing to debug 12 letter hands see if you can make it fail on a three letter hand.

因此如果你的单词游戏当输入单词,有12个字母的时候没法运行了，看看输入三个字母的单词它,能不能正常运行吧。

麻省理工公开课 - 计算机科学及编程导论课程节选