It costs nothing to make a pill.
现在制造药片不需要成本。
They saw Tom take the pill.
他们看着汤姆服了药。
How often should I take this pill?
这药片多久吃一次？
pill可数还是不可数
文思都
人气：1.77W
It costs nothing to make a pill.
现在制造药片不需要成本。
They saw Tom take the pill.
他们看着汤姆服了药。
How often should I take this pill?
这药片多久吃一次？