experiment thimble

例句：

1. 1.The scientist conducted an experiment to study the effects of gravity on objects.
   科学家进行了一个实验，以研究重力对物体的影响。
2. 2.The teacher asked the students to perform an experiment in class.
   老师要求学生们在课上进行一次实验。
3. 3. The researcher conducted experiments to find out if the new drug would work.
   研究员进行了实验，以确定新药是否有效。