创造性步骤的英文：
inventive step

inventive是什么意思：
adj. 发明的，善于发明的，有创造力的，独出心裁的

unity of invention
发明的单一性

Fantastic! Who invented it?
真不可思议！谁发明的？

Necessity is the mother of invention
穷则变,变则通

Modern inventions facilitate housework.
许多现代发明便利了家务劳动。

He got a patent for this invention.
他获得了这项发明的专利权。

step是什么意思：
n. 脚步；步态，步伐；步骤；措施；阶段，等级；台阶，平台；舞步
v. 踩，踏；跨步，行走；跳舞；使成阶梯状

step by step welding
跨步焊法

It is a step class.
这是踏板操训练班。

They are not in step with the times.
他们跟不上时代的步伐。

the execution of steps
舞步表演

To work step by step is as good as riding in a carriage.
安步当车