Meaning: This sentence describes children being active and having fun in a park.
Choice of Words: Children are young people. Run means to move quickly using your legs. Jump means to propel oneself into the air by pushing off from the ground.
Alternative Expressions
The kids are running and jumping in the park.
Meaning: This sentence conveys the same meaning as the first sentence, but it adds a sense of immediacy.
Choice of Words: The word "kids" is another way to say "children." "Are running" indicates that the action is happening now. "Jumping" is repeated to emphasize the action.
In the park, the children can be seen running and jumping.
Meaning: This sentence provides a more detailed description of the setting and the children's activities.
Choice of Words: The phrase "in the park" specifies the location of the action. "Can be seen" suggests that the speaker is observing the children.