许多从应用科学反馈来的想法影响着理论科学的发展。 A lot of ideas are feeding back from applied science into the pure sciences.
约翰几乎把他的所有唱片都馈赠给他的朋友，但他还剩一些。 John gave away almost all of his records to his friends, but he still had a very few left.
部分能量能以与它主要传播方向相反的方向从一个机械部件传到另一个机械部件，那就是我们所称的反馈。 Part of the energy can be transferred from one part of a mechanism to another, in a direction opposite to its main flow. That's what we call feedback.
