"bend back" in Chinese (Simplified)
向后弯曲向后折
Definition
将身体的某一部分（尤其是背部或脖子）向反方向弯曲。也可以指把某个物体向后折弯。
Usage Notes (Chinese (Simplified))
既可以用来形容人体动作（如瑜伽或伸展），也可以指物体弯曲。不属于成语或比喻用法。不要与 'bend over backwards'（努力、拼命帮忙）混淆。
Examples
Please bend back your arms slowly.
请慢慢地**向后弯曲**手臂。
The tree branch will bend back after the wind stops.
风停后树枝会**向后弯曲**回来。
Can you bend back your head without hurting your neck?
你能在不伤脖子的情况下把头**向后弯曲**吗？
Be careful not to bend back the cover of the book.
小心不要把书皮**向后折**。
When he laughed, he would always bend back in his chair.
他笑的时候总是会在椅子上**向后仰**。
Don’t try to bend back a metal rod with your hands; you might hurt yourself.
不要试图用手**向后弯曲**金属杆，可能会受伤。