bend back

a mixture of colours carry out experiments a beam of sunlight bend back

光的混合物进行试验一束光弯曲回去

On your next inhalation, lengthen the back of your neck and bend back slightly to counteract the tendency of your upper trunk to slump.

下一次吸气时，拉长颈部后侧并微微后仰来中和上半身含胸的趋势。

Palmer said: He's had a charmed life because mum actually put him down the toilet once thinking he was dead but he swam back up the U-bend.

帕默称：他一定是冥冥中有神保佑，有一次我妈妈以为它死掉了，把它冲下马桶，但是，它竟然从U型管里游了回来。

It drove you to bend back with all your might until your groins hardened, your thighbones pushed up and out, and your lower back arched too deeply.

你尽可能地向后弯曲，直到腹股沟变硬，大腿骨向上、向外推出，下背部过度地深弯。

Don't bend the book back, and you'll damage it.

别向后卷书, 会弄坏的.

Bend one's back as in fear or deference.

因害怕或顺从而弯腰。

For relay, pin bending and 900 bend back can be added.

继电器可增加弯脚及弯回900功能.

Bend back to the task until dying day.

鞠躬尽瘁,死而后已.

The stream took a bend back toward the ocean.

小溪拐了个弯,回头又朝大海的方向而去.

Bend your knees, keeping your back straight.

膝盖弯曲，背部挺直。

Lie down on your back and bend your knees up please.

请仰着躺下,把腿蜷起来.

To throw or bend back from a surface.

在表面上投掷或者使弯曲。