It is clear, then, that rhetoric is not bound up with a single definite class of subjects, but is as universal as dialectic; it is clear, also, that it is useful.
这样就清楚了，修辞学是没有确定的事物对象的，这一点有点像辩证法，而且很很有用。
2
In the same way, by opening up a channel between universal supply and human needs-by doing your neighbors or your friends or your customers service-you are bound to profit yourself.
Besides, adding a series of keyword fields leads you into one of the most fundamental and universal conundrums of data processing: If you give users 10 fields, someone is bound to want 11.