一个字典条目包含一个基本形式和多种可选变体。
A dictionary entry consists of a base form and multiple optional variants.
戴维斯说，生命变体形式——特别是极小的微生物——可能就出没于“我们的鼻子底下甚至鼻子里”。
Davies said the variant life forms - most likely tiny microbes - could still be hanging around "right under our noses - or even in our noses."
在字典查找期间，基本形式和变体的词形变化都将被查找到。
During the dictionary lookup, inflections of the base forms and variants are found.
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