This estimate will be based upon the company's past experience.

这种估计是根据企业过去的经验进行的。

The speculation must be based upon sound scientific principles.

推测必须以可靠的科学原理为基础。

Our efforts will be based upon performance, and we will measure progress.

我们的努力是基于行动的，同时会用进步来衡量。

I desire specially that a new surface force should be based upon Malta.

我特别希望在马耳他岛驻扎一支新的海面部队。

Study of business cycles must be based upon a satisfactory cycle theory.

对商业循环的研究必须以某种理想的循环论为基础。