youdao

Ironically, it's natural selection that keeps the human appendix from shrinking away completely.

具有讽刺意味的是，正是自然选择使得人类的阑尾没有完全消失掉。

youdao

The human appendix is a small dead-end tube connected to the cecum, or ascending colon, one section of the large intestine.

人的阑尾是个很小的一端闭锁的细长盲管，它的另一端连结盲肠，也叫升结肠，属于大肠的一部分。

youdao

How well it ever worked is open to dispute, and today it is to watches what the appendix is to the human body.

FORBES: Magazine Article