他的手紧紧握住哑铃。

His hand grips the ___dumbbell tightly.

别像个傻子一样在雨里站那么久。

Don't stand in the rain like a ___dumbbell for so long.

他每天用哑铃锻炼手臂肌肉。

He uses ___dumbbells every day to strengthen his arm muscles.