阶

进身之阶

jìn shēn zhī jiē

stepping-stone to greater power or higher rank

进阶

jìn jiē

advanced

门阶

mén jiē

doorstep

阶乘

jiē chéng

the factorial of a number, e.g. 5! = 5.4.3.2.1 = 120

阶位

jiē wèi

order

阶地

jiē dì

terrace (geography)

阶层

jiē céng

social class

阶梯

jiē tī

flight of steps

阶梯教室

jiē tī jiào shì

lecture theater

阶梯计价

jiē tī jì jià

volumetric pricing

阶段

jiē duàn

stage

阶段性

jiē duàn xìng

specific to a particular stage (of a project etc)