All galaxies formed at the same time, "evolution" refers to the development of structure and to the reduction of symmetry . 所有的星系是同时形成的，所谓“演化”乃指结构的发展和对称性的变化。
By your unswerving defence of these principles you have made a constructive contribution to the evolution of a world order . 你们坚定不移地捍卫了这些原则，这对一种国际秩序的演化和发展作出了建设性的贡献。
A parameter sensitive to thermal evolution, e. g. vitrinite reflectance, is measured on a certain number of samples from a well . 对热演化敏感的参数，例如，镜质体反射率，可从一口井的一定数量岩样进行测定。
Furthermore, the energy that powers the continuing evolution of the universe apparently can all be traced to nuclear reaction and transformation . 而且，赋予宇宙不断演化的动力的能量明显地可追逆到核反应和核蜕变。
Third, it is important to derive from the observations irrefutable evidence that the earliest phases in the evolution of protostars do occur . 第三个重要任务是要由观测得到不可辩驳的证据来证明原恒星演化中的一些最早期现象确实能发生。
Over the periods their saliva , a mild digestive juice like our own , was converted into a poison that defies analysis even today . 经过若干演化阶段，蛇的唾液，一种温和的助消化的象人们的唾液一样的液体变成了甚至在今天也难以分析的毒液。
Simple laws of physics suggest, that gas-dust complexes in the interstellar medium may evolve, first into protostars and subsequently into stars . 简单的物理学定律揭示出，星际介质中的气尘复合体可以进化，先是演化为原恒星，接下去再演化为恒星。
These investigators tenaciously argued the evolution of stars downward along the sequence ought to be accompanied by a continuous and very substantial loss of mass . 这些研究者就顽固地争辩说，恒星沿主星序向下的演化，应该伴随着连续的和很显著的质量损失。
This female, shaped by that informing hand, would naturally be in harmony with him, from the center of his profound identity to the raying circle of his variations . 从他深奥的个性核心起，到他演化后的光芒四射的光环止，那个被万能的圣手塑造出的女人都应该理所当然地与他和谐一致。
Thermal evolution in tiandong depression , baise basin 百色盆地田东坳陷热演化研究
