如果一道菜您之前已经做过很多次了，您可以很自信的照着菜谱做。

If you have cooked the same dish many times before, you can follow a recipe with confidence. Similarly, estimation for a software project is easy if you can meet the following criteria.

youdao

对不起，它已经售完了，我介绍其它菜给您行吗?。

Sorry, it is sold out. May I recommend something else to you?

youdao

先生您的菜已经上齐了。

Your dish is all here, Sir.

youdao