... Bend one's knees 屈膝（行礼）；脆。 Bend the neck 低头；屈服。 Bend one's will 使自己的意志屈从于他人。 ...
双语例句
1
The pleurodirans withdraw their necks laterally; that is, they bendtheneck sideways to tuck the head under the rim of the shell.
侧颈龟侧向收回脖颈；也就是说，他们把脖子侧弯以使头部隐藏在甲壳边缘下。
2
The instructor made him shake his head, swing his arms, stretch his neck and bend his knees.
教练让他摇头，摆动手臂，伸展脖子，弯曲膝盖。
3
Unwittingly, dependence on smart phones make a person's posture changes. Her body tends to bend and often stiff neck. This condition is also spreading to the wrist.