unties
v.
松开，解开( untie的第三人称单数 );
解除，使自由;
解决;
例句:
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High efficiency unties the method experience that circular functions inscribes in high school mathematics, good Bonus.
高中数学中高效率解三角函数题的方法经验, 好了加分.
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He unties a rope from the neck of the sack, plunges both hands in, and carefully lifts out a gray cloud.
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