单词	tangent plane
释义	tangent plane noun : the plane through a point of a surface that contains the tangent lines to all the curves on the surface through the same point Word History First Known Use 1856, in the meaning defined above
随便看	count noun count off count off (something) count off something count on count on or upon count one's blessings count one's chickens count one's chickens (before they hatch) count one's chickens before they hatch count one's chickens before they're hatched count out count palatine count someone in count the cost count the hours count toward count toward/towards count towards count up to count wheel countabilities countability countable countabler

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