Meaning: This sentence describes how firemen climbed a ladder quickly.
Choice of Words: Climb means to move upwards using hands and feet. Ladder is a tool with rungs that helps people climb. Fast means moving quickly.
Alternative Expressions
They go up the ladder quickly.
Meaning: This means that the people are moving up the ladder very fast.
Choice of Words: "They" refers to the people climbing the ladder. "Go up" means to move to a higher place, and "quickly" means to do something at a fast pace. So, "They go up the ladder quickly" means that the people are moving up the ladder at a fast speed.
They ascend the ladder with great speed.
Meaning: This means the same as the first sentence, but it uses more formal language.
Choice of Words: "They" refers to the people climbing the ladder. "Ascend" is a more formal word for "go up", and "great speed" means very fast. So, "They ascend the ladder with great speed" means that the people are moving up the ladder very quickly.
They scale the ladder at a rapid pace.
Meaning: This means the same as the first two sentences, but it uses different words.
Choice of Words: "They" refers to the people climbing the ladder. "Scale" means to climb something, and "rapid pace" means a fast speed. So, "They scale the ladder at a rapid pace" means that the people are climbing the ladder very quickly.