rollovern.
英 'rəʊləʊvə(r) | 美 'rolovɚ
中文n. 翻转；（车）翻覆；延期付款
词根词源
rollover (n.)also roll-over "an overturning," 1945, from verbal phrase; see roll (v.) + over (adv.). Economic verbal sense of "reinvest" is from 1957.
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