燕子衔泥垒大窝 (燕子銜泥壘大窩) yànzi xián ní lěi dà wō
yànzi xián ní lěi dà wō
phrase
the swallow's nest is built one beakful of mud at a time; many a little makes a mickle
Domain: Proverb 谚语
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Notes: (CC-CEDICT '燕子銜泥壘大窩')