无论有没有回来支持，不拱你的背部。

With or without back support, do not arch your back.

youdao

腰支持辊应与您下背部曲线相配合。

The lumbar support roll should fit into the curve in your lower back.

youdao

腰支持辊应与您下背部曲线相配合。

The lumbar support roll should fit into the curve in your lower back.

youdao