but the line they dare not cross is to splice human genetic material into an experiment.

VOA: standard.2010.06.09

What do we call the point where the pink and the blue line cross?

蓝粉两线的交点叫什么

耶鲁公开课 - 博弈论课程节选

What does it tell us that the pink and the blue line cross?

粉色的线和蓝色的线相交说明什么

耶鲁公开课 - 博弈论课程节选

Working in secret, they cross that line. The result is horrifying yet mesmerizing.

VOA: standard.2010.06.09

What does it mean to say the pink and the blue line cross?

这两条线相交到底说明了什么

耶鲁公开课 - 博弈论课程节选

and Mexican officials. Every day, thousands of people on foot and in vehicles go back and forth across the border here, and millions of dollars worth of products cross the line in trucks and railroad cars.

VOA: standard.2009.04.30

Now, just to repeat, again I know I've got some math phobics in the audience, let me just slow down a second, all I'm doing here is I'm saying look at this equation of the pink line, look at this equation of the blue line, X is when they cross, i.e., they are equal to each other.

我再重复一遍,我知道你们之中有些人数学不怎么好,我放慢一点说,我是这么解的,看这条粉线的方程,还有这条蓝线的方程,X是二者的交点,也就是说这点两个方程相等

耶鲁公开课 - 博弈论课程节选

The Greek Cypriots canceled the latest session Thursday after Turkish Cypriot authorities held up a bus convoy of Greek pilgrims for lengthy security checks as they sought to cross the dividing line between the communities.

VOA: standard.2009.09.05