build-upn.
美 ,bɪld'ʌp
中文n. 组成；逐渐增加或积累；堆起\nadj. 内建的
组成；逐渐增加或积累；堆起
adj. 内建的
词根词源
build-up (n.)also buildup, 1927, "accumulation of positive publicity," from build (v.) + up (adv.). Of any accumulation (but especially military) from 1943.
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