一应俱全 yìyīng-jùquán with everything needed available

怎么记住“一应俱全”: 一 one + 应 should + 俱 all + 全 whole = with everything needed available.

汉字

'Everything one needs is on hand, all complete' - 设施一应俱全 (shèshī yìyīng-jùquán) fully equipped with every facility; 家具一应俱全 (jiājù yìyīng-jùquán) furnished with everything.
Standard praise in listings/ads for a place, kit, or shop that has the full complement of items. Subject is the set of things provided.
Near 应有尽有 (yīngyǒu-jìnyǒu, has everything you could want); both stress completeness of provision.