original form

例句：

1. 1. The original form of the species is still unknown.
   该物种的原始形态仍然未知。
2. 2. The discovery of this ancient language has revealed its original form.
   这种古老语言的发现揭示了其原始形态。
3. 3.The original form of the painting was lost in the fire.
   这幅画的原始形态在火灾中丢失了。