Means bit by bit, little by little, or every tiny bit.
形容微小零星。
方志敏《可爱的中国·清贫》为革命而筹集的金钱，是一点一滴的用之于革命事业。”
She saved money bit by bit to buy a car.
Learn the next connected idiom: 一点一滴 (yī diǎn yī dī) → 滴水不漏 (dī shuǐ bù lòu)
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