比如人类胚胎会发育出腮、蹼足和退化的尾巴，映现出远古水生生物的性状。
Human embryos, for instance, develop, then lose, gills, webbed feet and rudimentary tails, reflecting their ancient aquatic life styles.
为了获得与牦牛生长发育性状相关的标记位点，提高牦牛生产性能，加快牦牛育种进程。
In order to obtain growth and development traits associated with the yak DNA marker, improve the performance and speed up the breeding process of yak.
试验研究了开花前不同光照处理对大豆开花后的发育、产量形成和品质性状的影响。
The effects of pre- flowering photoperiodic treatments on the post-flowering-development, yield formation and chemical quality of soybeans were studied.
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