我来把更一般的形式，写出来吧，在一维空间中，位置和速度，作为时间函数的，一般形式，这里的加速度是一个常数。

I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.

youdao

完美散列函数是一种在时间和空间方面都十分高效的静态搜索集实现。

Perfect hash functions are time- and space-efficient implementations of static search sets.

youdao

db 2 batch运行的总结表明，很多时间花在db2agent过程中，这个过程执行空间函数st_envelope和ST_Centroid。

The summary of the db2batch run shows that a lot of time is spend inside the db2agent process, and that's the process that executes the spatial functions ST_envelope and ST_Centroid.

youdao