However, for older sequence of evolutionarydevelopment, estimates based on parts in the fossil record.
然而，对于更古老的进化序列，估测则是基于化石记录的部分。
2
These incomplete requirements call for a flexible modeling process and for techniques which are appropriate for evolutionarydevelopment.
这些不完整的需求需要灵活的建模过程和适合于进化开发的技术。
3
Therefore effective regression testing is a key enabler for evolutionarydevelopment because we're adding new functionality to the code base all the time.