They have a whiplike structure called a flagellum. 它们有像鞭子一样鞭毛结构。
Actin and myoglobulin are the compositions building muscles' stretching function. Microtubulin is the basic substance which provides the flagellum and cilium the function of movement. 肌动蛋白及肌球蛋白乃是构成肌肉伸缩机构的组成部分,微管蛋白是赋予鞭毛及纤毛能动的基本物质。
flagellum flagella
[ noun ]
a whip used to inflict punishment (often used for pedantic humor)
<noun.artifact>
a lash-like appendage used for locomotion (e.g., in sperm cells and some bacteria and protozoa)
<noun.animal>
Flagellum \Fla*gel"lum\, n.; pl. E. {Flagellums}, L. {Flagella}. [L., a whip. See {Flagellate}, v. t.] 1. (Bot.) A young, flexible shoot of a plant; esp., the long trailing branch of a vine, or a slender branch in certain mosses.
2. (Zo["o]l.) (a) A long, whiplike cilium. See {Flagellata}. (b) An appendage of the reproductive apparatus of the snail. (c) A lashlike appendage of a crustacean, esp. the terminal ortion of the antenn[ae] and the epipodite of the maxilipeds. See {Maxilliped}.
The sound of a flogging floated out from the guardroom, the crack of the bone-tipped flagellum mingling with the whoops of soldiers as they roughed up a prisoner, taunting him as king, slapping him about.