lordosis

颈椎和腰椎区域正常的脊柱前凸弯曲。

The normal concave, backwards curvature of the spine in the cervical and lumbar regions.

脊柱过度前凸的异常弯曲,导致背部或颈部凹陷。

An abnormal excessive concave, backwards curvature of the spine, causing in normal human physiology a hollow in the back (lumbar lordosis, hollow back, saddle back) or the neck (cervical lordosis).

某些雌性哺乳动物表示接受交配的姿态:前肢伏下,后肢伸展,臀部抬高,脊柱向腹侧弓起,尾上举或侧移。

A body posture of some female mammals, indicating receptivity to copulation. It involves lowering of the forelimbs but with the rear limbs extended and hips raised, ventral arching of the spine and a raising, or sideward displacement, of the tail.