Concurrent with the evolution of environmental engineering practice, analytical methods have been developed . 与环境工程进展相一致，已发展了某些分析方法。
Yet with all our doubts we were dedicated to making a major effort for a peaceful evolution . 尽管我们疑虑重重，但还是真心诚意地想作最大努力发展和平局面。
The cases of karyotypic evolution mentioned so far have concerned karyotypes of related species . 到现在为止所提到的染色体组型进化的例子都是关于相近物种的染色体组型。
The chromosome apparatus also created new dimensions of the space within which the process of evolution takes place . 染色体机制还产生新的空间维，进化过程就在那里进行。
Only in the tropics were numerous late cretaceous groups extinguished during peaks in their evolution . 只是热带地区才有大批晚白垩纪生物类群正值其演化的极盛时期突然消亡。
Its present value is the result of an evolution that allows us to cast aside certain hypotheses from the outset . 它现在的值就是一种演变的结果，这可以使我们马上消除某些假设。
But this evolution being unknown, there was an odd sense of ambivalence on the plane back from beijing . 但是在离开北京的飞机上，由于当时还不知道事情的这种发展，人们有一种奇怪的复杂心理。
Insects keyed into this system of chemical relationships between related plant species very early in their evolution . 昆虫在它们进化的过程中很早就已楔入在相近植物物种间的化学关系的系统之中。
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。
