In 1890 he proposed that evolution was irreversible: that 'an organism is unable to return, even partially, to a previous stage already realised in the ranks of its ancestors'.
1890年，他提出进化是不可逆转的：“一个有机体无法回到其祖先先前到达的阶段，即使是部分逆转，也不可能。”
From the previous stage, you now have some fully matured and consumable services (Figure 13).
通过之前的阶段，您现在已经获得了一些完全成熟和可消费的服务(图13)。
Evolution is permanent and once a pokemon has evolved, it cannot turn back into its previous stage.
进化是永久且不可逆的过程。一旦神奇宝贝进化，它将不能恢复到从前的状态。
All requirements for the previous stage level must be satisfied before we proceed to the next stage of the model.
在我们继续模型的下一个阶段之前，要满足之前阶段等级的所有需求。
The works about the behavior of rigid-polyurethane foam mitigator done in previous stage are summarized briefly.
本文是对入水弹体硬质聚胺脂类泡塑头部缓冲器特性探讨的一个阶段小结。
The next transformation action uses another XSLT script to query the rule server, in case of a miss in the previous stage.
下一个转换操作在前一个阶段失败的情况下使用另一个XSLT 脚本来查询规则服务器。
Each new stage is formed by overcoming the internal contradictions between the forces and relations of production in the previous stage.
每个新阶段都是通过克服先前阶段中生产力和生产关系之间的内在矛盾而形成的。
Just as it was last time around, the key to the next stage of the computer industry is in fact the commoditization of the previous stage.
正如它的最后一次，对计算机产业的下一个阶段的关键是前一段商品化的事实。
If you say that the previous stage is a cross painted vertical wipe "enjoy the fun of painting," then would now have to work harder in the next over the pages.
假如说前一阶段横涂竖抹是在“享受绘画的乐趣”，那么现在就得下一翻苦功了。
Firstly, slowing down the speed of review appropriately so that you can set aside more time to think about your reviewing plan and make a summary for the previous stage.
首先，适当的减慢你的复习进度，这样您就可以留出更多的时间来思考你的复习计划和做一个前阶段的总结。
Memory like rotting leaves, those fresh Nenlv those already buried in the time scale of the previous stage, only omnipresent rotting smell to stay in the time scale of the tail.
忘忆像糜烂的叶女，那些清爽这些老绿迟未安葬在时光刻度的后段，惟有漫山遍野的糜烂气息留正在时光刻度的头部。
Works in this period are different from any previous stage. They are more like a group of free wild birds escaped from constraints, reaching the infinite possibility of art with intuition.
此时的作品不同于以往任何时期，它们更像是一群自由的野鸟终于挣脱了牢笼，凭着直觉找到了艺术无限的可能性。
Primary boot loaders are where the first stage of the boot loader is installed on the MBR (per the previous description).
主引导程序是安装在MBR上的第一阶段引导加载程序(见先前的描述)。
Because both of these operations are running in the same transaction and the previous access to EIS2 is read-only no compensating transactions are required at this stage.
因为这两项操作都是运行在同一事务中，而前面对EIS2的访问是只读的，所以在这一段中需要补偿事务。
It's "evolutionary" because each stage engenders a higher level of behavior than the previous one.
它的“进化性”源于每一步都能比以前行为提升更高的层次。
But unlike previous DB2 stages sample, you now work on the "input" page of DB2 stage, as input links are used instead of output links.
但是，与之前的DB 2stage示例不同，现在在DB 2stage的“Input”页面上操作，因为这里使用输入链接，而不是输出链接。
After playing supporting roles in previous Mastering Grails articles, this time they take center stage.
在前几期的精通grails系列文章中，JSON和Ajax都扮演支援者的角色，而这一次，它们担任主角。
Configuring the XML input stage is already covered by previous samples (refer to step 2 of sample 2).
前面的示例已经讨论了XML输入stage的配置(参考示例2的步骤2)。
What you are really doing at this stage is basing your process choice on observations and experience from previous projects.
您在这个阶段中真正在做什么，这是以先前项目的观察和经验为基础来决定您的过程选择的。
Finally, in the archival stage, you may need to work with aggregate listings of previous campaigns or the assets that were generated by those campaigns.
最后，在归档阶段，需要使用过去活动的合计清单或由这些广告活动产生的效益。
The previous arrangement of cells at one stage will have an important bearing on how the cells are configured when they next double.
在某个阶段中，细胞的排列形态对下一个阶段中细胞的形态有着非常重要的影响。
This point is confirmed by the fact that supplier delivery times have lengthened proportionally more than at any comparable stage in every previous cycle of the past 58 years.
以下事实证实了这点：与过去58年所有周期的任何可比阶段相比，供应商交货时间大幅延长。
The second stage: suitable for children aged 5-7. Consolidating the previous knowledge, we add some letter combinations into class to develop their interest for spelling skills.
第二阶段：适合5 -7岁的儿童。在巩固前一阶段学习的同时，加入一些字母组合读音的教学，让孩子对学习拼读单词有兴趣。
When you edited the XML Input stage in the previous section, the work you performed in Steps 3 and 9 identified the Key value and repetition element.
在上一个小节编辑XMLInput阶段时，您在步骤3和步骤9中所做的工作标识重复元素的key值。
Not investors, who have failed to push up share prices in the way this sort of earnings growth would have caused them to do at this stage of previous economic cycles.
投资者们并不高兴。换做是以前，经济循环中的这一阶段遭遇这样的利润增长率将会使他们以特定的方式尽力抬高股价，然而他们却没有这么做。
The choice of drugs used to treat a patient's disease depends on the patient's disease type, age, stage of disease, response to previous treatment and other factors.
治疗患者药物的选择是根据患者疾病的种类、年龄、疾病阶段、对之前治疗的反应以及其他因素做出的。
That is close to the 0.9% average at the equivalent stage of the six previous downturns. But the drop in output has been milder.
换句话说，0.9%相当于六年前衰退的平均水平。不过产出下降得比较轻微。
Through some previous classical public emergency cases, the deficiency of emergency management coping with public emergency events of China was analyzed in current stage.
通过以往发生的典型突发公共事件案例，深入分析了现阶段我国应急管理在应对突发公共事件过程中的不足。
Bargaining is very important; it is an inevitable stage in practical operations. Bargaining can improve the previous "contract" pre-allocation efficiency.
在现实生活中，谈判或者议价常常是不可避免的重要协商阶段，谈判可以提高先前“合同”的预分配效率。
Bargaining is very important; it is an inevitable stage in practical operations. Bargaining can improve the previous "contract" pre-allocation efficiency.
在现实生活中，谈判或者议价常常是不可避免的重要协商阶段，谈判可以提高先前“合同”的预分配效率。
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