Cestodes, or tapeworms, are gut parasites of vertebrates.
绦虫，或称带虫，是脊椎动物的肠道寄生虫。
For instance, cave fish lose their eyes, while parasites like tapeworms lose their guts.
举例来说，洞穴鱼失去了眼睛，而像绦虫一样的寄生虫则失去内脏。
The larval stage of many tapeworms, consisting of a single invaginated scolex enclosed in a fluid-filled cyst.
每一个囊尾蚴是由一个囊壁和陷入囊腔中的单独一个头节所组成的。
The U. S. Centers for Disease Control and Prevention says the U. S. has about 1,000 reported cases of tapeworms each year.
美国疾病控制和预防中心表示，美国每年有大约1千例绦虫报告病例。
If you don't use it, you tend to lose it. Evolution often takes away rather than adding. For instance, cave fish lose their eyes, while parasites like tapeworms lose their guts.
如果你不利用，你将会失去它。演化经常带走一些功能而不是给予。穴居的鱼儿失去了眼睛，而寄生虫类如绦虫则没有了内脏。
Tapeworms attach to the human intestinal tract, acting as a parasite that siphons off nutrients from the food you eat.
绦虫附着在人体肠道内，作为一种寄生虫从你吃的食物中吸取营养物质。
Tapeworms attach to the human intestinal tract, acting as a parasite that siphons off nutrients from the food you eat.
绦虫附着在人体肠道内，作为一种寄生虫从你吃的食物中吸取营养物质。
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