They have the floor carved so when the light hits at the June solstice, it tells them it's the solstice,"

VOA: standard.2009.12.15

So, for example, you know, I'm going to calculate next when it hits the ground.

比如说,我下面要来算,物体何时落地

耶鲁公开课 - 基础物理课程节选

So you get two answers when it hits the ground.

解出了两个落地时间

耶鲁公开课 - 基础物理课程节选

National Hockey League players it was U.S. will again be playing for their countries when the men's hockey competition hits the ice on February 16.

VOA: standard.2010.01.12

That's when it hits the ground.

方程的解就是落地时间

耶鲁公开课 - 基础物理课程节选