生物学对动物是怎么从一个受精卵发展一个完全成形的有机体有一个相当好的理解。
Biology has a pretty good understanding of how animals develop from a fertilized egg to a fully formed organism.
通过室内试验和数理统计的方法，研究了光棘球海胆受精卵发育的生物学零度及有效积温。
The biological zero temperature and effective accumulated temperature in sea urchin Strongylocentrous nudus were determined by constant temperature experimentation in a laboratory.
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