flex¹ ◙ verb 1. [with obj.] bend (a limb or joint) • 弯曲，屈曲（四肢，关节） »she saw him flex his ankle and wince. 她看见他弯起脚踝满脸痛苦。 [no obj.] (of a limb or joint) become bent • （四肢，关节）弯曲 »prevent the damaged wrist from flexing. 让伤腕免弯曲。 cause (a muscle) to stand out by contracting or tensing it • 绷紧（肌肉）使之突起 »bodybuilders flexing their muscles. 健美运动员绷紧肌肉。 [no obj.] (of a muscle) contract or be tensed • （肌肉）收缩，绷紧 »a muscle flexed in his jaw. 他颚部一块肌肉绷紧了。 [no obj.] (of a material) be capable of warping or bending and then reverting to shape • （材料）有弹性 »set windows in rubber so they flex during an earthquake. 将窗户用橡皮箍紧，地震时可有挠度。 [usu. as adj. flexed] [Archaeology] place (a corpse) with the legs drawn up under the chin • [考古] 屈肢安放（尸体） »a flexed burial. 屈肢葬。
1. early 16th cent.: from Latin flex- 'bent', from the verb flectereflex² ◙ noun 1. (chiefly Brit.)a flexible insulated cable used for carrying electric current to an appliance • [主英] 花线，皮线