test-bed

例句：

1. 1. The scientist conducted a test-bed experiment to study the effects of radiation on plants.
   科学家进行了一个试验床实验，研究辐射对植物的影响。
2. 2. The engineer designed a test-bed for testing new materials.
   工程师设计了一个用于测试新材料的试验床。
3. 3. The researcher used a test-bed to simulate the environment of space for their experiments.
   研究员使用试验床模拟太空环境进行实验。