for:為...;derive(d) for的意思是,為了誰而得出,這裏的“誰”可以是人,也可以是物;
from:從...;derive(d) from的意思是,從哪裏得出,可以從事物中得出,也可以從人身上得出
例:
Bounds are derived for the probabilities related to sojourn times of this process.
導出了壹些與該過程的逗留時有關的小概率事件的界。
Amy strength is derived from her parents and her sisters.
艾米的堅強源自於她的父母和姐姐們。