roothold
/'rʊthold/ /ˈrutˌhold/
n. 
定之处；部着力
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enzyme, enzyme-immunoassay, enzymes, enzymic, enzymology, enzymolysis, enzymopathy, enzymoprivic, enzymosis, enzymuria,
相似单词
rootdozer, rooted, rootedness, rooter, rootery, roothold, rooting, rooting reflex, rootle, rootless,