单词	back taper
释义	back taper noun : a slight relief on a tap or drill causing it to have a larger diameter at the point than at the shank Word History First Known Use 1941, in the meaning defined above
随便看	reaffirmed reaffirming reaffirms reaffix reaffixed reaffixes reaffixing reafforest reafforestation reafforestations reafforested reafforesting reafforests Reagan reaganesque reaganites romanium romanization romanizations romanize romanized romanizers romanizes romanizing Romanly

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