层次化设计是指将一个复杂的设计任务分派成一系列有层次结构的、相对简单的电路设计任务。
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How hard the swimmers work now will determine how they perform in the Olympics.
I'm trying to convince young people to adopt a new attitude towards career planning.
The book is meant for children aged 5–7.
You are so creative! I could never make my own clothes.
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