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A man can finish his shopping for clothes quickly if everything goes well.

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若开环系统是稳定的，即位于S平面的右半部的开环极点数p=0，则闭环系统稳定的充要条件是：当ω由-∞变到+∞时，开环频率特性包围（-1,j0)点0圈。

The team tried hard to apply for government funds, ____________________ （却发现他们必须自己克服财政困难). （only to find; overcome)

break只能终止并跳出最近一层的循环结构.

We have to look at everything ______ an international perspective.