The cookies were going back and forth and back and forth and the hearts up and down, well, this thing that we had that called a loop last week with a forever block with a statement inside of it is simply gonna look a little something like this.

这些饼干人来来回回的移动,还有这些爱心们上上下下地漂浮,都用到我们上周提到过的循环结构,当然还有个声明在里面，就有点像屏幕上,显示的这样。

哈佛公开课 - 计算机科学课程节选

You have a nice grid pattern and you can use a city block metric to add up the number of blocks between people's doors.

整个城市呈格网状,你可以数数,人们相隔多少个街区。

耶鲁公开课 - 心理学导论课程节选

Having reached the end of the block, go back up and check the test.

执行到了这块代码的最后，程序会回去再做一次测试。

麻省理工公开课 - 计算机科学及编程导论课程节选

Well, this block here on the left that I came counter counter=0 up with arbitrarily sets a variable called counter equal to 0 and then it forever says that counters value 1 and then it changes the counter by 1.

大家看一下左边的这一段代码,其中有一个随便定义的变量,它会一直显示counter的值,每显示一次，counter加。

哈佛公开课 - 计算机科学课程节选

So, what you do is you set up a couple of displays, one where the block is stopped, the other one where you take this away with a trap door and it keeps going.

所以,你可以设计几个演示,一个是木块被挡住了,另一个是用活门把木块挪开,使得屏板继续上升

耶鲁公开课 - 心理学导论课程节选