Gears

When I speak to a Westerner, I have to shift mental gears, so to speak.

Tatsuo likes looking at aircraft landing gears.

Tom shifted gears.

Be careful or you'll strip the gears.

I don't oil their gears.

Never shift gears when you're crossing railroad tracks, as it could cause your car to stall straddling the tracks.

You may need hex keys to adjust the gears on your bike.

The gears had worn down over time.

I shifted gears.

You must engage low gears when you drive as these mountain roads are very uneven.