如鲠在喉

lit. as if having a fish bone stuck in one's throat (idiom) / fig. very upset and needing to express one's displeasure

as / as if / such as

to choke on a piece of food

to choke on a piece of food / (literary) a fish bone lodged in one's throat

to exist; to be alive / (of sb or sth) to be (located) at / (used before a verb to indicate an action in progress)

throat / larynx