She bent back one of the red leaves, and saw a brown neck.

她把一片红色花瓣分开，看见了一条棕色的脖子。

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Keeping your head bent down for long is not good for your neck.

长时间低着头对脖子不好。

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This means your neck and spine should be in a neutral position, shoulders and torso relaxed, knees bent at 90 degrees with both feet flat on the floor.

这也就是说你的脖子和脊柱应该处于中正的位置，肩膀和躯干放松，膝盖弯曲呈90度角，双脚平放在地面上。

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