Gradation

(noun.) the act of arranging in grades.

(noun.) relative position in a graded series; 'always a step behind'; 'subtle gradations in color'; 'keep in step with the fashions'.

海勒姆手打

• Why does not every collection of fossil remains afford plain evidence of the gradation and mutation of the forms of life? 查尔斯·达尔文. 物种起源.
• I have attempted to show how much light the principle of gradation throws on the admirable architectural powers of the hive-bee. 查尔斯·达尔文. 物种起源.
• Round the sides of his head--without the slightest gradation of grey to break the force of the extraordinary contrast--it had turned completely white. 威尔基·柯林斯. 月亮宝石.
• Thus every gradation, from an ordinary fixed spine to a fixed pedicellariae, would be of service. 查尔斯·达尔文. 物种起源.
• In fishes and reptiles, as Owen has remarked, The range of gradation of dioptric structures is very great. 查尔斯·达尔文. 物种起源.
• It is surprising in how many curious ways this gradation can be shown; but only the barest outline of the facts can here be given. 查尔斯·达尔文. 物种起源.
• Of various admirals I could tell you a great deal: of them and their flags, and the gradation of their pay, and their bickerings and jealousies. 简·奥斯汀. 曼斯菲尔德庄园.
• Let us look to the great principle of gradation, and see whether Nature does not reveal to us her method of work. 查尔斯·达尔文. 物种起源.
• In the different species of geospiza there is a perfect gradation in the size of the beaks, only to be appreciated by seeing the specimens or their ill ustrations. 李贝. 西洋科学史.
• The author (1855) has also treated Psychology on the principle of the necessary acquirement of each mental power and capacity by gradation. 查尔斯·达尔文. 物种起源.
• If such gradations were not all fully preserved, transitional varieties would merely appear as so many new, though closely allied species. 查尔斯·达尔文. 物种起源.
• The plate shows all gradations of intensity--the tidy is dark, the black tie is light. 伯莎M.克拉克. 科学通论.
• The idea is to break up the surface into various sized dots, as the various gradations of color on the original cannot be transferred by any other method to a sheet of copper and etched. 佚名. 神奇的知识之书.
• And all these gradations can be actually traced. 查尔斯·达尔文. 物种起源.
• That is to say, that the color changes imperceptibly in subtle gradations of light and shade. 佚名. 神奇的知识之书.
• Many subsequent improvements have been made, one type of which employs a succession of rolls which act in pairs on the grain one after the other and reduce it by successive gradations. Edward W. Byrn. 十九世纪发明进展.
• The _nothing_ of conversation has its gradations, I hope, as well as the _never_. 简·奥斯汀. 曼斯菲尔德庄园.
• Gradations of structure, with each stage beneficial to a changing species, will be favoured only under certain peculiar conditions. 查尔斯·达尔文. 物种起源.
• He was so old and his face was very wrinkled, so that a smile used so many lines that all gradations were lost. 欧内斯特·海明威. 永别了,武器.
• The gradations from leaf-climbers to tendril bearers are wonderfully close, and certain plants may be differently placed in either class. 查尔斯·达尔文. 物种起源.
• So that I think there is little in the advice of making those changes by easy gradations. 本杰明·富兰克林. 富兰克林自传.
• Mr. Busk, however, does not know of any gradations now existing between a zooid and an avicularium. 查尔斯·达尔文. 物种起源.
• We should be extremely cautious in concluding that an organ could not have been formed by transitional gradations of some kind. 查尔斯·达尔文. 物种起源.

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