单词	sperm nucleus
释义	sperm nucleus noun : either of two nuclei that derive from the generative nucleus of a pollen grain and function in the fertilization of a seed plant Word History First Known Use 1887, in the meaning defined above
随便看	rayas Rayburn rayed rayer raygrasses raying Rayleigh Rayleigh disk Rayleigh equation Rayleigh scattering Rayleigh wave Rayleigh-Jeans law rayles rayless rayless chamomile rayless goldenrod raylessness raylessnesses raylet raylets raylike rayon rayonism rayonnant rayons

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