When deciding who gets credit, I always remember: it is not the whistle that pulls the train.

As the old proverb says, it's not the whistle that pulls the train; true progress is achieved by steady effort, not by loud boasts.

The lab adopted the micro-pulling-down method to grow uniform single crystals for the experiment.

In unfamiliar company, one pulls one's head in to avoid drawing attention.

When the manager walked in, one pulled one's head in and stopped arguing.

When the CEO entered the room, pulling one's head in quickly became the unwritten rule.

When feeling threatened, one pulls in one's horns to avoid further risk.

She adjusted the thermostat, pulling down a notch to save energy.

When the music became too loud, he pulled down a notch the volume knob.

When she tightens the backpack straps, she pulls down a notch to balance the load.