Double-jointed boy双关节男孩
double-jointed compasses[测] 双接头圆规
double-jointed arm双枢杆
double-jointed swivel复式转座
double- jointed双关节
double-jointed swivel arm复式转臂
double-jointed swivel wall drilling machine复式转臂墙钻床
ADJ(形容词) having unusually flexible joints permitting an abnormal degree of motion of the parts 有双重关节的; 可异常弯曲的