“演变的”用英语怎么说

要确定事态演变的明确结果,并不容易.It is not easy to establish the exact sequence of events.他论证说,生物是由于一些小的遗传变异的积累而逐渐演变的.He argued that organisms evolve gradually by accumulating small hereditary changes.每项发展都是而且将来也是逐渐演变的.Each development...