動(dòng)詞 retract:

1. formally reject or disavow a formerly held belief, usually under pressure
   同義詞：abjure, recant, forswear, resile
2. pull away from a source of disgust or fear
   同義詞：shrink back
3. use a surgical instrument to hold open (the edges of a wound or an organ)
   同義詞：pull back, draw back
4. pull inward or towards a center
   同義詞：draw in

1. The accused refused to retract (his statement).
   那被告拒不撤消(其供述).
2. The undercarriage on light aircraft does not always retract in flight.
   輕型飛機(jī)飛行時(shí)起落架不一定縮回。

re.tract

v.（動(dòng)詞）
re.tract.ed,re.tract.ing,re.tracts
v.tr.（及物動(dòng)詞）
To take back; disavow:
收回；否認(rèn)：
例句：
refused to retract the statement.
拒絕收回那聲明

To draw back or in:
拉回或拉進(jìn)：
例句：
a plane retracting its landing gear.See Synonyms at recede
正在拉回起落架的飛機(jī)參見(jiàn) recede

Linguistics
【語(yǔ)言學(xué)】
To utter (a sound) with the tongue drawn back.
收舌發(fā)音：用縮回的舌頭發(fā)出（聲音）
To draw back (the tongue).
縮回（舌頭）
v.intr.（不及物動(dòng)詞）
To take something back or disavow it.
收回某事或否認(rèn)它
To draw back.
縮回

來(lái)源：
Latin retract3re retract- [to revoke] [frequentative of] retrahere [to draw back]
拉丁語(yǔ) retract3re retract- [撤消] [] retrahere的重復(fù)動(dòng)詞 [縮回]
re- [re-]
re- [表示.后退.]
trahere [to draw]
trahere [拉]
V., tr., senses 2 and 3, and v., intr., sense 2, Middle English retracten
及物動(dòng)詞釋義2和釋義3，不及物動(dòng)詞釋義2， 中古英語(yǔ) retracten
from Old French retracter
源自 古法語(yǔ) retracter
from Latin retractus [past participle of] retrahere [to draw back]
源自 拉丁語(yǔ) retractus [] retrahere的過(guò)去分詞 [縮回]

【引伸】
retract.abil.ity 或
retract.ibil.ity
n.（名詞）
retract.able 或
retract.ible
adj.（形容詞）
re.tracta.tion