搜尋結果
primitive streak
- IPA[ˈprimədiv strēk]
- the faint streak which is the earliest trace of the embryo in the fertilized ovum of a higher vertebrate.
noun: primitive streak, plural noun: primitive streaks
- 更多解釋
- the faint streak which is the earliest trace of the embryo in the fertilized ovum of a higher ...
Oxford Dictionary