The Chinese phrase 感激不尽 (gǎnjī bùjìn) is formed by combining two key components: 感激, meaning "to feel grateful" or "gratitude", and 不尽, which literally means "not exhausted" or "endless". When merged, the phrase functions as an idiomatic expression where 不尽 acts as an intensifier. The construction follows a common Chinese grammatical pattern where an adjective or verb (感激) is modified by 不 + complement (不尽) to indicate an extreme degree, in this case, that the feeling of gratitude is so profound it cannot be fully expressed or exhausted. Thus, the entire phrase translates metaphorically to "eternally grateful" or "I can't thank you enough", conveying a depth of thanks that transcends ordinary limits.