“退化的”造句

人类仍有尾巴退化的痕迹.
A human being has the vestige of a tail.

杂质和污染对退化的作用不能忽视.
The role of dopants and contaminants in degradation cannot be ignored.

虚圆点实际上是一退化的二次曲线.
The circular points are really a degenerate conic.