They saw something strange.
Meaning: This means the group of people observed something unusual. It's like saying, The people looked and noticed something that was not familiar to them.
Choice of Words: They refers to a group of people that was previously mentioned. Saw means to perceive something with the eyes. Something refers to an unspecified object or matter. Strange means unusual or unfamiliar. When you put them together, "They saw something strange" is a description of a group of people observing an unusual object or matter.
Alternative Expressions
Related Expressions