you「ll have to help, since he won」t have the dexterity or concentration to successfully maneuver a toothbrush.
你得帮助他,毕竟他的手指不够灵巧,也没那么专心,所以还不能很好的操作一个牙刷。
i didn't quite have the dexterity or the mechanical ability to build a robot, although i wanted to.
尽管我想制造机器人,但是我那时不够灵巧,也欠缺机械才能。
with wonderful dexterity he then throws a handful of wet clay onto it and, before the stone slows and falls to the ground, shapes it into a rotund pot.
接着在胚料慢下来掉落到地面上之前,借着高超的手艺,他撒一把湿粘土在上面,形成圆罐的形状。
if that sounds simple, consider the amount of sensory data, cognitive processing and physical dexterity needed to manipulate something that flows and bends in your fingers.