retractile disc纤毛帽;回缩盘
retractile mesentitis收缩性肠系膜炎
retractile bridge伸缩桥
retractile fibre收缩性纤维
retractile e伸缩自如的
retractile fiber回缩纤维
retractile mesenteritis系膜炎;回缩性系膜炎;性肠系膜炎
retractile cord可收缩软线
ADJ(形容词) capable of being drawn in 收缩的
the retractile claws of a cat