底的英語翻譯：

a copy kept as a record; base; bottom; end; fundus; the truth of a matter
【醫(yī)】 base; basement; bases; basi-; basio-; basis; batho-; bathy-; fimdi
floor; fundus; pavimentum; solum

層的英語翻譯：

layer; region; stage; story; stratum; tier
【計】 layer
【醫(yī)】 coat; lamella; lamellae; lamina; laminae; layer; strata; stratum

提供的英語翻譯：

offer; provide; afford; furnish; lend; supply
【經(jīng)】 offer; render

只讀內(nèi)存的英語翻譯：

RAM
【計】 read-only memory