A stem can be a bound root, a free morpheme, or a derived form itself.

词干可以是一个黏着词根、自由语素或者本身就是一个派生词。

A stem can be a bound root, a free morpheme, or a derived form itself.

词干可以是粘着词根，自由词素和一个派生词。

This process of adding more than one affix to a free morpheme is termed complex derivation.

这个过程中加入一个以上的词缀一个自由词素称为复杂的推导。