This entry for 不遗余力 is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Does 不遗余力 appear elsewhere on Lughet?
Yes — 不遗余力 appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.