conditioning of grain

例句：

1. 1. The experiment was designed to test the effect of different conditions on the growth of plants.
   这个实验旨在测试不同条件对植物生长的影响。
2. 2. The new policy is aimed at improving the living conditions for the working population.
   新政策旨在改善工作人群的生活条件。
3. 3. The scientist conducted a series of experiments to determine the conditioning effects of various factors onthe behavior of animals.
   科学家进行了一系列的实验，以确定各种因素对动物行为的影响。