A cat retracts its claws.
猫缩进它的爪子.
《现代英汉综合大词典》
The split graph is given endomorphism images are retracts.
给出了任意自同态像图都是收缩核的分裂图的结构.
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The nose unit is twin - wheeled and retracts rearward.
前鼻单元是双轮并向后收起.
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A totally hypothetical high - speed , Metalclad carrier . The control car retracts into hull to lower wind resistance.
一架设想中的 高速 全金属硬式飞艇,为了降低阻力,控制仓能够缩进蒙皮中.
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