一切不为人们所需要的信号与干扰。
Anything that does not need for people to signal interference.
他们会解释这个信息，并将经常改变他们的行为来交付他们认为人们所需要的信息。
They will interpret this information, and they will often change their behavior to deliver what they think the people directing the measurement want.
普通车床作为最早的金属切削机车的一种，目前仍然有许多有用的和为人们所需要的特性。
The engine lathe , one of the oldest metal removal machines, has a number of useful and highly desirable attributes.
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