v.
formally reject or disavow a formerly held belief, usually under pressure
"He retracted his earlier statements about his religion"
同义词：abjurerecantforswearresile
pull away from a source of disgust or fear
同义词：shrink back
use a surgical instrument to hold open (the edges of a wound or an organ)
同义词：pull backdraw back
pull inward or towards a center
"The cat retracted his claws"
同义词：draw in
Theory of Retracts
Theory of retracts
Proximinal Retracts and Best Proximity Pair Theorems
Chemistry. Columbia lab retracts key catalysis papers
Fixed point index and fixed point theorem for Euclidean neighborhood retracts
Retracts of hypercubes
Retracts: Graphs and ordered sets from the metric point of view
Characterizing certain incomplete infinite-dimensional absolute retracts
Some theorems on absolute neighborhood retracts
Adjustable angle medical forceps
