progressive metamorphosis

• 前进变态

progressive metamorphosis的用法和样例：

例句

1. The cockroach undergoes incoplete metamorphosis.
   蟑螂属于不完全变态昆虫。
2. Cterolepisma villosa Fabricius is an insect of incomplete metamorphosis which reproduces several generations a year.
   毛衣鱼为不完全变态昆虫，一年发生数代。