Meaning: The sun was going down below the horizon.
Choice of Words:Set means to go down below the horizon.
Alternative Expressions
The seagulls took off as the sun started to go down.
Meaning: The birds started flying away from the beach as the sun was going down.
Choice of Words: **Took off** means the seagulls started to fly. **As** means the two things happened at the same time. **Sun** is the big, bright star in the sky. **Go down** means it was getting dark outside.
The seagulls departed as dusk approached.
Meaning: The birds left the beach as the sun was going down.
Choice of Words: **Departed** means the seagulls left. **As** means the two things happened at the same time. **Dusk** means the time of day when the sun is going down and it's getting dark outside.