It also found that the children's ability was not dependent on the amount of time they had spent in child care.

VOA: special.2010.11.30

The a is not dependent on time.

和时间无关

耶鲁公开课 - 基础物理课程节选

x and y are dependent on time.

和 y 坐标都是时间的函数

耶鲁公开课 - 基础物理课程节选