0 to bend an arm, leg, etc. or tighten a muscle -- 活动（手臂、腿等）；使（肌肉）绷紧
1 (a length of) wire with a plastic cover used for connecting a piece of electrical equipment to a supply of electricity -- （一段）花线，（一段）皮线
The paper here shows that similar predictions (effect of flex vs. sticky prices) hold when policy is described by simple optimized rules.
Once the elbow is flexed, the operator continues to guide the hand around the elbow to grasp the forearm and wrist as described above.
Apparently, federalism is a concept in flex, and presents itself in various forms of political arrangement.
Pressure in the antecubital fossa will flex the forearm so that it can be grasped and delivered over the chest.
Since the tendons get stiffer as they are stretched, they allow finger joints to flex or extend within a limited range.
Two arms are indicated on the frontal side of the sculpture, first running parallel to the torso, then flexing slightly inward.
Attacks of brief vertigo, nausea and imbalance provoked by turning over in bed, lying down, sitting up from lying position, extending or flexing the neck.
During swing, as the joint flexes, more differences are seen.
