| 单词 | internal fertilization |
| 释义 | > as lemmasinternal fertilization internal fertilization n. [after German innere Befruchtung (1826 or earlier)] Zoology fertilization occurring inside the body of an animal. ΚΠ 1885 A. Sedgwick & F. G. Heathcote tr. C. Claus Elem. Text-bk. Zool.: Mollusca to Man v. 149 In the viviparous fish,..a true copulation and an internal fertilization [Ger. innere Befruchtung] of the egg takes place. a1933 J. A. Thomson Biol. for Everyman (1934) I. xi. 205 In the crab..the spermatozoa pass into the oviduct of the female, illustrating internal fertilization, as in all backboned animals from Reptiles to Mammals inclusive. 2000 Nature 27 Apr. 933/2 There are good theoretical reasons to expect that intelligence can out-compete strength, and that internal fertilization gives every female mammal the final choice of which sperm is going to fertilise her egg. < as lemmas |
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