階的英語翻譯：

rank; stairs; steps
【計】 characteristic
【醫(yī)】 scala

梯的英語翻譯：

ladder; stairs; terraced

變化的英語翻譯：

change; turn; vary; diversification; movement; transformation; transmutation
variation
【醫(yī)】 allaxis; alleosis; alloeosis; change

能力的英語翻譯：

ability; capacity; competence; capability; faculty
【化】 capability; capacity; potency
【醫(yī)】 capacity; competence; faculty; potency; potentia
【經(jīng)】 ability; competence; power

成本的英語翻譯：

costing
【經(jīng)】 cost; cost,insurance,freight by plane; degression