词语：定体 读音：dìng tǐ 注音：ㄉㄧㄥˋ ㄊㄧˇ
核糖体分型与中国鼠疫自然疫源地之间有一定的关系。
There was certain correlation between the ribotype and the plague foci.
这些二聚体以一定角度坐落于表面，其中一个原子突起得比另一个稍微远一些。
These dimers sit at an angle to the surface, with one atom protruding slightly farther than the other.
假定他们说的是与地球上相似的生命体——因为这是我们唯一了解的类型——那目标星球就一定也与地球相似。
Assuming they were talking about earthlike life - which they were, since it's the only kind we understand - the target planets would have to be earthlike too.
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