你扔球出去的时候不可能使整个手臂固定在一个位置。

You'd never throw a ball with your entire arm locked in one place.

youdao

机械驱动式机械手臂只用于动作固定的场合。

Mechanically driven mechanical arm for use only in fixed position.

youdao

机械驱动式机械手臂只用于动作固定的场合。

Mechanically driven mechanical arm for use only in fixed position.

youdao