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Gaokao Math Practice Question

为了得到函数 $y=\sin \left(2 x-\frac{\pi}{3}\right)$ 的图象, 只需把函数 $y=\sin \left(2 x+\frac{\pi}{6}\right)$ 的图象 ($\qquad$)

  1. A.向左平移 $\frac{\pi}{4}$ 个长度单位
  2. B.向右平移 $\frac{\pi}{4}$ 个长度单位
  3. C.向左平移 $\frac{\pi}{2}$ 个长度单位
  4. D.向右平移 $\frac{\pi}{2}$ 个长度单位

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