He says it is true that such crops can have higher output with less cost,but added: No one knows the consequences that will have on soil fertility and the human body.

VOA: special.2010.05.18

It says, if answer, sorry, imagine x is -16, ANS is 0 is less than -16, no. So what does it do?

对不对？让我们来看看，如果答案，对不起0,如果x是-16的话，ANS为0，小于-16吧，对？

麻省理工公开课 - 计算机科学及编程导论课程节选

"There is no evidence that the U.S.is any less strong than it has always been.

VOA: standard.2010.03.18