happiness是happy的派生词。
英语有大量的合成词和派生词。
English has a lot of words which are made by composition and derivation.
这是个派生词，你能指出它的词根吗？
词干可以是粘着词根，自由词素和一个派生词。
A stem can be a bound root, a free morpheme, or a derived form itself.
这是一个派生词。你能说出它的词根、前缀和后缀吗?。
This word is a derivation. Can you point out its root, prefix and suffix?
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.
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