V-ERG
(使)縮回;(使)縮入;(使)收起
When a part of a machine or a part of a person's body retracts or is retracted, it moves inwards or becomes shorter.
例句
Torn muscles retract, and lose strength, structure, and tightness.
撕裂的肌肉會(huì)收縮,喪失原來的力量、結(jié)構(gòu)和緊實(shí)度。
...when the aircraft's wheels were retracted.
當(dāng)飛機(jī)的輪子收起來的時(shí)候