同义词： jejuneness juvenility
以上来源于: WordNet
inexperience
词根： callow
callow 年轻而无经验的；羽毛未丰的
While his young, strident opponents flung themselves forward with bone-crunching crudeness, he collected their callowness calmly, and guided it out of the ring.
BBC: The life of a sumo wrestler
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