很难估计出不同选择的成本和收益。

It's hard to estimate the costs and benefits of making different choices.

youdao

在过去，做时间表是很简单的，但现在我们有更多的课程，让这个过程变得复杂的是，当中许多课程还有不同选择。

In the past, doing the timetabling was quite simple but now we have a lot more courses and what's made it complicated is that many of them have options.

youdao

他说，公司可以更加灵活，尝试不同选择。

Companies can afford to be agile, he says, and try different options.

youdao