1、一点一点地
... after a little过了一会儿 by little and little一点一点地，逐渐地 little by little一点一点地，逐渐地 ...
2、逐渐
... by leaps and bounds飞速地,突飞大进地 by little and little一点一点地,逐渐地 by means of用,凭借,寄托 ...
3、慢慢地
慢慢地(by little and little), 此释义来源于网络辞典。
4、渐渐地
[gradually;increasingly;slowly;by degrees;by little and little;step by step] 渐渐地;逐渐[gradually;increasingly;slowly;by degrees;by little and little;step by step] 程度或数量逐步地;慢慢地 .