transitional structure

• 过渡的结构

transitional structure的用法和样例：

例句

1. This form suits a certain historical period and is therefore transitional.
   这是一定历史时期的形式，因而是过渡的形式。
2. These species are widely located in various transitional terrestrial and amphibious eco-systems.
   这些物种广泛分布于陆地和水陆过渡的各种类型的生态系统中。