1.She says that bending the head down to look at the device, strains the neck and creates an unhealthy bend to the back.
bend down 蹲下,弯腰;(使)弯曲;
She used to bend the corners of the pages down.
她总是把页角折起来 。
The tall man bent down to get through the doorway.
那高个男人弯身经过出入口 。