单词学习：flexed 动词过去式/形容词
flexed
/flɛkst/
弯曲的；屈曲的；使（肌肉）收缩的
Gu Laoshi flexed his arm to show his students the movement of the biceps muscle.
顾老师弯曲手臂，向学生们展示肱二头肌的运动。
单词卡片
卡片已就绪
