在未受精卵中，这些物质是不活跃的，而且分布不均匀。

In the unfertilized egg, the substances are inactive and are not distributed homogeneously.

youdao

它不仅能使你增加大量体重，而且会破坏你的睡眠，也许还能导致你在无意中吃进有毒物质，或你会过敏的食物。

It not only can make you gain serious amounts of weight and disrupt your sleep, it may also cause you to inadvertently eat toxic substances or foods to which you're allergic.

youdao

人们不仅要在物质方面得到提高，而且在精神方面也追求有一个质的突变。

People not only need to be improved in the physical aspects, but also in the spirit of the pursuit of a mutation.

youdao

As carefully as people work with radioactivity here, and using often much, much safer radioactive materials than radium bromide, and using them, and special hoods, and having special procedures, they still do a lot of checking with these Geiger counters to make sure everything's safe.

虽然在这里人们,用放射性物质都非常的小心，而且通常用的材料放射性,都比溴化镭要小得多，并且用的时候,都用特殊的容器,特殊的操作过程,但我们平时仍会用。

麻省理工公开课 - 化学原理课程节选