Now there's a lot of mechanical action and peristalsis going on here, but there's also a ton of chemical digesting too.

这里有许多机械动作和蠕动，但也有大量的化学消化。

With the mechanical action of an habitual smoker, he placed the cigar close to his ear and squeezed it to make it crack. Immediately he uttered a cry of surprise. The cigar had yielded under the pressure of his fingers.

他以习惯抽烟的机械动作，将雪茄放在耳边，用力挤压，让它裂开。顿时发出一声惊呼。雪茄在他手指的压力下变软了。