making duplicates of a transplanted gene

例句：

1. 1. We need to duplicate the formula for this recipe.
   我们需要复制这个食谱的配方。
2. 2. The scientist wanted to duplicate the results of his experiment.
   科学家想要复制他的实验结果。
3. 3. The artist is replicating a painting that was lost in the fire.
   艺术家正在复制一幅在火灾中丢失的画作。