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The trimming head is bent backward for easy reach and maximum control.
在修整头部向后弯曲，方便范围和最大程度地控制。
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Roll head gently from side to side, then forward and backward.
柔和地向两边拉伸脖子，然后同样向前低头向后仰脖。
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Roll head gently from side to side, then forward and backward.
柔和地向两边拉伸脖子，然后同样向前低头向后仰脖。
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