沧海一粟[滴] [- - yí sù]a grain of corn in the wide sea — a drop in the bucket; a drop in the ocean; a grain of millet from a granary; a speck in a vast ocean; (be) only a drop of water compared to the vast sea; very small portion of sth. vast:
•¶ 个人的力量和群众的力量相比， 不过是沧海一粟[滴]。 The strength of an individual， as compared with that of the masses， is but a drop in the ocean.