That's the sliding part of the sliding filament model.

这是滑动灯丝模型的滑动部分。

To understand which happens when, we gotta go back to the sliding filament model.

为了理解什么时候发生，我们必须回到滑动灯丝模型。

When this happens — and it will, eventually — it's called the sliding filament model of muscle contraction.

当这种情况发生时——最终会发生的——我们称之为肌肉收缩的滑动纤维模型。

Kind of like you'll have to play this video over and over again to get all the little steps of the sliding filament model straightened out.

有点像你必须一遍又一遍地播放这个视频来理顺滑动灯丝模型的所有小步骤。

If you do watch this one again, you will re-learn that your smooth, cardiac, and skeletal muscles create movement by contracting and releasing in a process called the sliding filament model.

如果你再看一遍，你会重新认识到你的平滑肌、心肌和骨骼肌是通过收缩和释放来创造运动的，这个过程叫做滑动纤维模型。