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频率响应：电路和系统的工作状态跟随频率而变化的现象，称为电路和系统的频率特性，它包括幅频特性和相频特性两部分。

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Words in this sentence are all spelled correctly: “Michael was considering the idea from various angels”.

In scientific writing, the language should be as complicated as possible. While the diction of storybooks should be much simpler.

If you use an author’s specific words or ideas, you must place those words within quotation marks and credit the source.

This sentence is redundant. "There were three teachers that taught each and every hour at school today."