step by step

形容词 step by step:

1. one thing at a time
   同义词：bit-by-bit, in small stages, piecemeal, step-by-step, stepwise

副词 step by step:

1. in a gradual manner
   同义词：gradually, bit by bit
2. proceeding in steps
   同义词：stepwise

1. Most programs are fairly rigid--they tell the computer exactly what to do, step by step.
   大多数程序相当刻板——它们精确地告诉计算机一步一步地做什么。
2. Step by step he gained the child's confidence and got the whole story from her.
   他逐渐地取得了那个小孩信任并从她那里了解到事情的全部经过。
3. Step by step Mary taught the little dog to obey her.
   玛丽慢慢地教得小狗听她的话了。
4. He will be promoted step by step.
   他将被逐步提升。