C1 一点一点地，逐渐地
gradually
I saved up the money bit by bit. 我一点一点积攒下了这些钱。
Bit by bit, we built up a pretty good library.
She grew the business bit by bit.
Bit by bit, details of the affair emerged.
Since we moved into the house five years ago, we've been renovating it bit by bit.
They're taking the whole building apart, bit by bit.
See also: bit noun (AMOUNT)