What does "climb, fall, get, get" mean in the third grade text?

Chinese in the first volume of grade three

Sima Guang's Text Analysis

A group of children were playing in court. One climbed the urn and his foot fell into the water, so everyone abandoned it. As long as the urn is broken with a stone, the water will burst and the child will live.

Deng: Climb.

Fall into: fall into.

Refers to the urn.

D: indicates permission or ability.

Translation:

One day, a group of children were playing in the yard. There is a big water tank in the yard. A child climbed the urn, slipped into the jar and sank into the water. Everyone abandoned and left. Sima Guang immediately picked up a stone and threw it at the urn. The urn was broken and water gushed from the crevasse. Only those who fall into the water can survive.