noun🔗Share步带，管足带。 (of an echinoderm) A row of pores for the protrusion of appendages such as tube feet."The sea star uses its ambulacra, visible as rows of tiny holes along its arms, to extend its tube feet and grip onto rocks. "海星利用它的步带，也就是沿着它手臂排列的细小孔洞，伸出管足，从而抓住岩石。anatomyanimalbiologyorganismpartChat with AIVocabulary GamePractice Reading
