它们身后留下了一条长长的痕迹，你也许可以说这是它们从一个位置移动到另一个位置的轨迹。

They leave long trails behind them, tracks you might say as they move from one point to another.

youdao

如果您保存这个文件到另一个位置，就登陆到那个地址。

If you saved the file to a different location, then enter that location here.

youdao

它们采取各种步骤从一个位置到达另一个位置。

They take steps to get from one place to another.

youdao

Now, a little later, and a little later later, because between the first and second, you get a velocity, the second and third you get another velocity.

现在,再晚一点,再再晚一点,因为第一个和第二个位置,你得到一个速度,第二个和第三个位置,你得到另一个速度

耶鲁公开课 - 基础物理课程节选