He said shortly after the largest mass murder since World War II, the supreme commander of its forces was telling his parliament how he ordered that attack.

VOA: standard.2009.10.27

There's nothing to do here, because the forces are 0, the mass is 0.

就不用管这里了,因为这里的力是 0,质量也是 0

耶鲁公开课 - 基础物理课程节选

There's nothing to do here, because the forces are 0, the mass is 0.

就不用管这里了,因为这里的力是 0,质量也是 0

耶鲁公开课 - 基础物理课程节选