预备知识

background knowledge / prerequisite

to advance / in advance / beforehand / to prepare

to prepare / to make ready / preparation / preparatory

variant of 備|备[bei4]

to prepare / get ready / to provide or equip

(bound form) to prepare; to equip / (literary) fully; in every possible way

to know / to be aware

knowledge / CL:門|门[men2] / intellectual

to know / knowledge / Taiwan pr. [shi4]

to record / to write a footnote