You face has 9 muscles beneath your skin that you contort , flex , and move. 你的脸部皮肤下有9块可以扭曲、弯曲和运动的肌肉。
The gardeners flexed their muscles and began to dig. 园丁们舒腰展臂后才开始挖地。
All the contestants flex their muscles in front of the judgers. 所有的参赛者都在评审面前展示他们的肌肉。
用作名词 (n.)
We wound off a couple of yards of wire for a new lamp flex. 我们解开几码电线作为新的电灯花线。
He gave his biceps a flex to impress the ladies. 他收缩他的肱二头肌以吸引那些女士们的目光。
While the flexibility of working for yourself can be nice, more and more employers are offering flex time and telecommuting options. 由于为自己工作的灵活性很受欢迎，越来越多的雇主提供了弹性工作时间和远程工作的选择。
Flex Agents are used in paints that are applied to flexible components, such as flexible urethane bumpers, to help the paint resist cracking when the urethane bumper flexes. 它常可用于像具有弹性的乙烷作为漆面，它可抑制漆面的裂化，当乙烷成分松散时。
