They once entered our life.

他们曾经走进我们的生命。

youdao

The black mamba is a deadly poisonous snakes, why do I take this name? Because I once entered the stadium, I'm deadly, like the black mamba.

黑曼巴是一种拥有致命剧毒的蛇，为什么我取这个名字呢？是因为我一旦进入赛场，我就是致命的，就像黑曼巴一样。

youdao

CAPTCHAs can be frustrating at times, but take solace in knowing that once entered correctly, you've just completed a tiny bit of community service.

CAPTCHA系统有时令人沮丧，但要知道，一旦得到了正确的答案，就完成了一点点社会服务的一小部分。

youdao

So we'll talk a bit more about this idea of functions today, but, get int, again, can think of it as a black box, whose purpose in life is to prompt the human for input and pester the human if he or she doesn't actually give it int, but then once it has that, has entered it from the user, it's quote unquote, returns it to you.

所以我们进今天将多讨论点这个函数的概念，但是，GetInt，我们可以把它当做一个黑盒子，它的唯一目的是提示人们来输入,并且如果他或她没有,给它int数，则会纠缠用户，但是一旦它得到了，用户输入的int数，对输入进行引用，返回给你。

哈佛公开课 - 计算机科学课程节选

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