en_tn/lam/02/15.md

clap their hands ... they hiss and shake their heads

ways in which people make fun of others and insult them (See: rc://en/ta/man/translate/figs-metonymy)

the daughter of Jerusalem

This is a poetic name for Jerusalem, which is spoken of here as if it were a woman. (See:rc://en/ta/man/translate/figs-personification)

"Is this the city that they called 'The Perfection of Beauty,' 'The Joy for All of Earth?'"

This question is used to express sarcasm. AT: "This city that they called 'The Perfection of Beauty,' 'The Joy for All of Earth' isn't so beautiful or joyful any more!" (See: rc://en/ta/man/translate/figs-rquestion)

"We have swallowed her"

AT: "We have completely destroyed Jerusalem" like an animal swallows its food (See: rc://en/ta/man/translate/figs-metaphor)