变数

cháng shù yǔ biàn shù

常数与变数

constants and variables

shì qing zài méi yǒu chéng gōng zhī qián hái huì yǒu xīn de biàn shù

事情在没有成功之前，还会有新的变数。

There will be new variable factors before the mission is accomplished.

qián tú chōng mǎn le biàn shù

前途充满了变数。

The future is subject to various uncertainties.

yóu yú biàn shù hěn duō chéng běn hěn nán zhǔn què gū suàn

由于变数很多，成本很难准确估算。

With so many variables, the exact cost is difficult to estimate.