Examples
dì yī bù第一步yǒng永yuǎn远shì是zuì最nán难de的。
第一步永远是最难的。
The first step is always the hardest.
第一步是最麻烦的。
It is the first step which is troublesome.
有些人认为从小学升到中学是踏入成年的第一步。
The graduation from elementary school to middle school is regarded by some as the first step towards adulthood.