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fertilise造句
31. One widely discussed idea, which the Royal Society's correspondents re-examine, is to fertilise the oceans with iron. 32. Hillis thinks this can be explained if the asexual clams sometimes fertilise eggs from another species and retain some or all of their genes, rather than ejecting them. 33. The brown membrane surrounding the egg cell is the zona pellucida. The head of the sperm carries special enzymes to dissolve this membrane, which it must do in order to fertilise the egg. 34. "But how does the sperm get in to fertilise the eggs?" she asked. 35. Female spiders can do this because they store sperm for a period of days or weeks before they use it to fertilise their eggs. 36. Even if he did fertilise the egg of a non-paired female it would not survive as it takes two adults to raise a single chick. 37. Here a close - up of a number of sperm trying to fertilise an egg. 38. The Newcastle research also paves the way for a woman to grow her own sperm and use it to fertilise her natural eggs, creating a child to which she is both mother and father. 39. The programme, a dramatisation of the epic journey sperm undertake in their quest to fertilise the egg, reveals other fertility secrets. 40. The 'artificial sperm' were then used to fertilise eggs, leading to the birth of 60 'grossly healthy' baby mice, who went on to have families of their own, the journal Cell reports.