The number of copies you get depends on how many times you do the cycling.

具体的产物数量取决于你进行循环的次数

耶鲁公开课 - 生物医学工程探索课程节选

So what you get on the plate is many copies of the small number of plasmids that you've put in.

我们只要放入少量质粒,就能在培养基上得到大量的复制品

耶鲁公开课 - 生物医学工程探索课程节选