To her surprise, Komananov heard the sudden thrum of hidden machinery coming to life.

The hidden machinery whirred and the massive entrance portal slid slowly into the ground.

The Shadow believed that his weight and Moe's had started the hidden machinery of the craft.

What if it disappeared into the hidden machinery of some hidden lab to rise from the ashes?

As she approached with her escort, the doors swung inward - an immense and silent movement of hidden machinery.

Moments later I hear a click and the working of hidden machinery.

The corridor shook with the pound and whirr of huge, hidden machinery.

There was a grinding of hidden machinery.

Spinning the vector, rotating all the hidden machinery into view.

The smooth action was accompanied by the rhythmic hum of hidden machinery.