You should still make them generic (for instance, accepting different parameters, and so on), but they are called from shell scripts (similar to the shell script you created in this exercise).
您仍然需要使它们为普通可用的(例如，接受不同的参数，等等)，但是它们是从命令脚本中被调用的(与您在这个练习中创建的命令脚本类似)。
In order to make themselves pretty-looking, they try many different ways of losing weight. Some go on a diet, some take exercise, some eat medicine, others even turn to operation for help.
减肥的方法层出不穷，有的采用节食减肥，有的进行运动减肥，有的利用药物减肥，有的甚至进行手术减肥。
Exercise could make cardiovascular system have different adaptive effects.
运动可以使心血管系统产生不同的适应效果。
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