The old man sat on the park bench and watched the world go by.

Meaning: He spent time observing the activities and changes in the surroundings, like people walking, birds flying, or the sun setting.

Choice of Words: World refers to the planet Earth or the universe, and go by means to pass by or elapse. So, the phrase watched the world go by means he observed the activities and changes in the environment around him.

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Related Expressions