"鞠躬" means "to bow" in Chinese. In Engpsh, you can say "to bow" to express the same meaning. Here is an example sentence:
"The audience stood up and bowed to the performers as a sign of respect."
Note that "鞠躬" is a formal and respectful gesture, typically done as a way of showing respect or gratitude. In Engpsh, you might also use the phrase "to bow one's head" to describe this gesture.