In one activity, children try to get a robot arm to pick up a block and place it in a cup.

VOA: special.2010.07.28

It violates gravity, but six-month-olds aren't smart enough to know that a block just stuck over here is also surprising.

因为它违背了地心引力,但六个月大的婴儿还是不够聪明,他们没能发觉突出的木块也是令人惊奇的

耶鲁公开课 - 心理学导论课程节选

That belief in Christ is to some a matter of life and death has been a stumbling block for readers who would prefer to think it a matter of no great consequence.

有些读者认为,对基督的信仰是关乎生死的大事,这对于那些对基督教,不以为然的人是一个障碍。

耶鲁公开课 - 1945年后的美国小说课程节选

They say it would have caused huge clouds of dust to block sunlight.

VOA: special.2009.01.20

The natural thing to say is, it's worried about the fact that the king is exposed and it's trying to block me by capturing my bishop.

一个很自然的说法是,它担心它的王会暴露出来,因此它试图通过吃掉我的象来封死我

耶鲁公开课 - 死亡课程节选

The president said the Treasury Department will do what it can to block the bonuses.

VOA: standard.2009.03.16

But if you avoid all of these minutia and focus really just on the idea, it looks like what was a blue say block, a so called statement, is now going to be something called printf where the F happens to stand for formatted.

但是如果你抛开所有这些繁琐的细节，把注意力集中到,它的编程思想，那么它只不过一个蓝色的say程序块，是一个声明,即所谓的printf函数，其中的f是,用于格式化输出。

哈佛公开课 - 计算机科学课程节选

And,it is threatening to block what little cross-border traffic exists.

VOA: standard.2010.05.26

But notice what this does. The first thing it does is, it says, let's check and make sure x is greater than or equal to 0. If it isn't, notice what's going to happen. None of that block is going to get executed, and it's going to come down here and print out a useful piece of information, which says, hey, you gave me a negative number. I don't know how to do this.

做的是和以前一样的事情,但是注释它做了什么，第一件做的事情就是,程序说，要去检查并且确信x是大于等于0的，如果不是的话，请注意会发生什么,下面的代码都不会被执行,程序会到这里来然后显示一些有用的信息,信息会说，嘿，你给了我一个负数,我不知道该怎么弄这个了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Turkey,which hoped to join the European Union, threatened in January to block Nabucco, citing a lack of progress in its talks on EU accession, but on Thursday it voiced full support to the project.

VOA: standard.2009.05.08

But what looks like this orange block as of now in Scratch, add orange to your so called inventory, well, it's gonna take at least two lines of code in C to actually create the inventory array with this first line and then put something like the word orange inside of it.

就好比Scratch里面橘色的这一块，把“桔子“加到所谓的“清单“里面去,在C语言中至少需要两行代码来实现,第一行代码创建一个货单数组,第二行就需要把“桔子“放进去。

哈佛公开课 - 计算机科学课程节选

The 60-vote advantage is also important because it will make it far more difficult for Republicans to block passage of bills through a filibuster, in which senators tie up the floor in long speeches to prevent a vote.

VOA: standard.2009.06.30