确定词干是查找单词中不变部分的过程，它是单词中与时态和语气无关的保持不变的片断。

Stemming is the process of finding the constant part of a word, which is the fragment that stays the same no matter which word tense or mode is used.

youdao

等温“指温度不变，这部分就是指一个等温过程。”

Constant temperature means isothermal, so this part means an isothermal process.

youdao

可以将不变的部分转移到一个单独的表中。

The invariant parts could be moved into a separate table to save space.

youdao

Constant temperature means isothermal, so this part means an isothermal process.

等温“指温度不变，这部分就是指一个等温过程。

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Well--again, we gonna be careful about refining this, just like we all agreed, I suppose, that you can have the very same body even though somebody--the parts come and go, items get added, other items get knocked off.

我们得仔细研究如何对其定义,我们都认可了，先这么假设,即使肉体的某些部位丢失或新增,原来的肉体还是不变，肉体的某些部分可能新增可能丢失。

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