I can't find anything online. Would it be 全句子？ I'm also interested to know how to say 'sentence fragment'.
'complete sentence' is translated as '完整句子' in Chinese
"A complete sentence" = "一句完整的句子"
wan2 zheng3 (pinyin)
jyun4 zing2 (jyutping)
complete; intact; whole
'sentence fragment' is not really a concept in Chinese I think. But then, define 'sentence', Western grammar has no solid definition.
句 is a character formed from 口 and 勹。 勹 is perhaps an old version of 包. That fits nicely with 'wrap your lips around this = say this' 句子 would then be 'something you say' in Chinese.
sentence fragment: 不完整的句子
It means, 完整的句子 learn more about Chinese here： Chinese learning