单词	retraction
释义	retraction /rɪˈtrakʃ(ə)n / noun 1 [mass noun] The action of drawing something back or back in: prey are grasped between the jaws upon tongue retraction... Repeated and prolonged asymmetric filopodial retraction does not alter growth cone direction. A small fraction, consistent with one or two molecules of tip retractions, show clear sawtooth patterns in force. This is a typical example for which the well-known consequence is cell retraction and rounding off of the surface. 2 [count noun] A withdrawal of a statement, accusation, or undertaking: he issued a retraction of his allegations... The president has given instructions for the ambassador to be called in order to demand a retraction. The director gets to interview the priest who claims to have been the direct witness to the retraction. Their government has angrily demanded a retraction of tactless comments made by our treasury secretary.
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