The only important thing to realize about that is that these differences start to occur very early in development.

唯一需要引起重视的是,这些差异发生在,发育阶段的早期

耶鲁公开课 - 生物医学工程探索课程节选

Both of these were in the UK in the early part of the 20th century.

这些都发生在,20世纪早期的英国。

麻省理工公开课 - 固态化学导论课程节选

Things of course have changed since those early times in so many ways.

与早期相比 情况已发生多方面的变化

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The nucleus contains all the DNA, and so the early stages of gene expression, transcription, happened inside the nucleus where all the DNA is.

NA都在细胞核里,所以早期的基因表达,转录,发生在将所有DNA,都包于其中的细胞核中

耶鲁公开课 - 生物医学工程探索课程节选

Food has changed in a lot of ways from the early ancestral days.

自人类早期起,食品在各方面发生变化

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选