The action should occur after the specified time interval from a specific reference point.

行为应该从指定参照点的指定时间间隔之后发生。

youdao

Time, just like your age, is nothing more than a point of reference, nothing more.

时间，就像你的年龄，只不过是一个参考点而已，仅此而已。

youdao

Each ball image is a reference point in time and space.

球的每个图像都是时间和空间上的一个参考点。

youdao

The whole idea of replacing the watch with a band that acts as a mobile computer would be interesting, for the very fact that it would replace the real estate (our wrists) once used for a single point of reference on time.

FORBES: Let's Stop Calling It An iWatch

Though Surface is clearly a tablet device, Sinofsky pointed out that the process of developing Windows 8 (on which Surface's Windows RT operating system is based) started in the summer of 2009, when there was no Apple iPad as a reference point (though it remains unclear if Microsoft began working on its tablet at that time).

CNN: Microsoft Surface tablet goes on sale for $499