选项板也包括了控制流所需要的基本编程结构，例如有条件执行的决策点和流程周期的循环。

The palette also includes basic programming constructs that allow for controlling the flow, such as decision points for conditional execution, and loops for process cycles.

youdao

这就是循环的世界的两端交汇的那个点。

This is the point where the two ends of the circular world meet.

youdao

现在你应该感觉更有活力，更加敏锐。 如果你发现耳朵的某个部位一触即疼或者对触摸敏感，你可能愿意花几分钟时间针对这个点给予温柔的循环按摩。

If you notice some areas of your ears are sore or sensitive to touche you may wish to spend a few moments giving this spot a gentle circular massage.

youdao

So it's certainly at least linear in the length of the list. For each starting point, what do I do?

它至少是线性的计算列表的长度,每次到了循环开始的点？

麻省理工公开课 - 计算机科学及编程导论课程节选

I can be a little more careful about keeping track of what goes on inside of that loop. If I don't have any more work to do, let me just stop.

我能更小心点来跟,踪循环里发生了什么,如果没什么可干的了，就停下来吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

Do nothing, close your loop and then down here do something.

不做什么，关闭你的循环，然后到这里做点事情。

哈佛公开课 - 计算机科学课程节选