管足指的是在棘皮动物水管系统中从辐管分出的管状运动器官。沿步带紧密排列，各管足末端具有吸盘，当水倒流回基部的坛囊时，管足就缩入体内。从棘皮动物步带表面所伸出的薄壁细管，在顶端有吸盘，基部有二根细管和体壁正下方的壶腹相连，其内腔表面覆盖着纤毛，水管系统充满体液。
n. sucker
misc. ambulacral foot ; tube-foot
就在我朝洞里探望时，从洞顶上挂下一只小海 星，仅仅悬在一条线上，或许就在它的一只管足上。
In the moment when I looked into the cave a little elfin starfish hung down, suspended by the merest thread, perhaps by only a single tube foot.
未能立即做出道歉是十足的判断失误，在日本文化中，企业高管应迅速进行道歉，要推诿责任也是以后的事。
The lack of an immediate apology constituted a gross misjudgment in a culture in which corporate executives are expected to apologise swiftly and quibble over fault later .
真是孩子气，十足的孩子气，您只要记住我爱您，其他您什么也不要管。
Silly boy! Silly, silly boy! Just remember that I love you and don't worry your head about a thing.
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