有些学校对校服的要求非常严格，如果你的领带结太松，就会被留堂。

In some schools the uniform is so strict that you get a detention if your tie knot is too loose.

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如果你觉得有必要，请在拴所有的马时使用快松结，这样的结可以在你拉拽绳子的一端时马上松开被拴住的马。

Tie all horses with a quick-release knot so if you need to, you can instantly pull the end of the rope and release the horse.

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从自洽求解薛定谔方程和泊松方程出发研究了利用异质界面上的极化电荷来剪裁异质结能带。

The energy band tailoring in AlGaN/GaN heterostructure by using polarization charge is investigated according to the self consistent solution of Schr dinger equation and Poisson equation.

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