entries → 必備
TSUMUGU · TOCFL C1 (est.) · 詞
必備 word · TOCFL C1 (est.)
必備 ＝ 必 ＋ 備
ㄅㄧˋ ㄅㄟˋ · bìbèi
adjective — essential, indispensable; that must be kept ready

字源 FORM — what the parts do

必must, surely (必須)bì
備to prepare, have ready (準備)bèi
必備，必須的必，準備的備。
關 · Related
必須bìxūthe same 必 — what one is obliged to do準備zhǔnbèithe same 備 — the plain act of getting ready