The biology class conducted a laboratory test to observe the effects of different chemicals on plant growth.
生物课上，学生们进行了一项实验室试验，以观察不同化学物质对植物生长的影响。
Students were required to perform a laboratory test to assess their understanding of the scientific method.
学生们被要求进行一项实验室试验，以评估他们对科学方法的理解。