Apparently (by no means certainly) this first man and woman were dissimilar in their sexual organisation. I conceive it possible that their offspring (if both had married again and both had children) would be sexually dissimilar, like their parents, or sterile together. Pray forgive my dreadful writing; I have been very unwell all day, and have no strength to re-write this scrawl. I am working slowly on, and I suppose in three or four months shall be ready.英文原著 · 《More Letters of Charles Darwin Volume I》
de Wimphen was the friend to whom Julie had begun the letter upon her marriage. The glances exchanged by the two women said plainly that in her Julie had found an intimate friend, an indulgent and invaluable confidante. de Wimphen's marriage had been a very happy one. Perhaps it was her own happiness which secured her devotion to Julie's unhappy life, for under such circumstances, dissimilarity of destiny is nearly always a strong bond of union.英文原著 · 《A Woman of Thirty》
Now, as has been said before, the dissimilar rays having an unequal degree of refrangibility, it will be impossible to obtain a focus by the light passing through a double-convex lens without its being fringed with color. Its effect will be readily understood by reference to the accompanying cut.英文原著 · 《American Hand Book of the Daguerreotype》
Wherefore and how I am certain, I hardly can tell; but it IS so. She doesn't like me, Eustace; I think she never will like me. Is it my fault, as it is my misfortune, my ways are not her ways? Is it my fault, that my habits and modes are dissimilar wholly? 'Tis not her fault; 'tis her nature, her virtue, to misapprehend them: 'Tis not her fault; 'tis her beautiful nature, not ever to know me. Hopeless it seems,--yet I cannot, though hopeless, determine to leave it: She goes--therefore I go; she moves,--I move, not to lose her.英文原著 · 《Amours de Voyage》
When such considerations are fully appreciated it will be realised that medleys of most dissimilar occurrences are all confused together under the term Variation. One of the first objects of genetic analysis is to disentangle this mass of confusion.英文原著 · 《Darwin and Modern Science》
(6) When the difference between the patterns of the model and presumed ancestor of the mimic is very great, the female is often alone mimetic; when the difference is comparatively small, both sexes are commonly mimetic. The Nymphaline genus Hypolimnas is a good example. In Hypolimnas itself the females mimic Danainae with patterns very different from those preserved by the non-mimetic males: in the sub-genus Euralia, both sexes resemble the black and white Ethiopian Danaines with patterns not very dissimilar from that which we infer to have existed in the non-mimetic ancestor.英文原著 · 《Darwin and Modern Science》