Now I could have made a key, keys don't have to be strings, but as it happened, I didn't.

现在我可以建立一个键了，键并不一定是字符串，但这儿既然已经是字符串了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Okay, but it may be-- how many national anthems around the world do we have in minor keys?

好了,但是也许,世界上有多少个国家的国歌,采用的是小调呢

耶鲁公开课 - 聆听音乐课程节选

If you want to get some input from the user, my God I don't want to have to program it to low level zero and 1 just to get keys from the keyboard; please let there have been someone who does that for me and indeed there are an increasingly sophisticated options that you can pull off the shelf.

如果你想获得一些用户的输入数据，我的上帝,我可不希望在键盘上敲入0，1的低水平方式来编程;,希望有个人能帮我做这件事吧,但是现有的选择,也变得日益复杂了。

哈佛公开课 - 计算机科学课程节选

You might have to hold the Shift key or something like that, but they're standard keys.

你可能要按住Shift键或什么键，但他们是标准键。

哈佛公开课 - 计算机科学课程节选